{"id":4721,"date":"2025-11-13T17:20:28","date_gmt":"2025-11-13T09:20:28","guid":{"rendered":"http:\/\/jhwk.online\/?p=4721"},"modified":"2026-02-27T11:15:48","modified_gmt":"2026-02-27T03:15:48","slug":"%e4%b8%89%e8%a7%92%e5%87%bd%e6%95%b0-2","status":"publish","type":"post","link":"http:\/\/jhwk.online\/?p=4721","title":{"rendered":"\u7acb\u4f53\u51e0\u4f55"},"content":{"rendered":"\n<div class=\"wp-block-stackable-call-to-action stk-block-call-to-action stk-block stk-3960b93 is-style-default\" data-v=\"2\" data-block-id=\"3960b93\"><div class=\"stk-block-call-to-action__content stk-content-align stk-3960b93-column stk-container stk-3960b93-container stk-hover-parent\"><div class=\"has-text-align-center stk-block-content stk-inner-blocks stk-3960b93-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-eeed53d\" id=\"\u558a\u4f60\u6765\u8bb2\u9898\uff01\" data-block-id=\"eeed53d\"><style>.stk-eeed53d .stk-block-heading__text{color:#0693e3 !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">\u558a\u4f60\u6765\u8bb2\u9898\uff01<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-245933c\" data-block-id=\"245933c\"><style>.stk-245933c .stk-block-text__text{color:#0693e3 !important;}<\/style><p class=\"stk-block-text__text has-text-color\">\u628a\u77e5\u8bc6\u8bb2\u7ed9\u522b\u4eba\u662f\u6700\u9ad8\u6548\u7684\u5b66\u4e60\u65b9\u6cd5\uff01\u5b66\u4e60\u91d1\u5b57\u5854\u7406\u8bba\u548c\u8d39\u66fc\u5b66\u4e60\u6cd5\u90fd\u8bc1\u660e\u4e86\u8fd9\u4e00\u70b9\u3002\u5494\u5494\u6765\u8bb2\u4e3a\u4f60\u63d0\u4f9b\u4e00\u4e2a\u5e73\u53f0\uff0c\u8bf7\u4f60\u6765\u89e3\u7b54\u4e0b\u5217\u95ee\u9898\uff0c\u5e76\u5c06\u89e3\u9898\u8fc7\u7a0b\u5f55\u5236\u51fa\u6765\uff0c\u8ba9\u4f60\u56e0\u2018\u5206\u4eab\u77e5\u8bc6\u2019\u800c\u8fdb\u6b65\uff0c\u8ba9\u77e5\u8bc6\u56e0\u2018\u88ab\u5206\u4eab\u2019\u800c\u66f4\u6709\u610f\u4e49\u3002<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-56c6eb0\" data-block-id=\"56c6eb0\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-b01f8c8\" data-block-id=\"b01f8c8\"><style>.stk-b01f8c8 {border-top-left-radius:13px !important;border-top-right-radius:13px !important;border-bottom-right-radius:13px !important;border-bottom-left-radius:13px !important;overflow:hidden !important;border-style:solid !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:0px !important;}.stk-b01f8c8 .stk-button{background:#0693e3 !important;}<\/style><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=4294\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">\u67e5\u770b\u8981\u6c42<\/span><\/a><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-file alignright\"><a id=\"wp-block-file--media-878cd7aa-e7c3-4f98-8ac2-83feb45a752f\" href=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/\u4ea4\u4e92\u5fae\u8bfe\u5b66\u751f\u63a2\u7a76\u95ee\u9898\u2014\u2014\u7acb\u4f53\u51e0\u4f55\u90e8\u5206-1.pdf\">\u9898\u76ee\u4e0b\u8f7d<\/a><\/div>\n\n\n\n<h5>\u9898\u76ee1<\/h5>\n<p>\u5df2\u77e5\u56db\u68f1\u53f0\\(ABCD &#8211; A_1B_1C_1D_1\\)\u7684\u4e0b\u5e95\u9762\u548c\u4e0a\u5e95\u9762\u5206\u522b\u662f\u8fb9\u957f\u4e3a4\u548c2\u7684\u6b63\u65b9\u5f62\uff0c\u5219( )<\/p>\n<p>A. \u4fa7\u68f1\\(CC_1\\)\u4e0a\u4e00\u70b9\\(E\\)\uff0c\u6ee1\u8db3\\(\\displaystyle \\frac{C_1E}{C_1C} = \\displaystyle \\frac{1}{3}\\)\uff0c\u5219\\(A_1B \\)\/\/\u9762\\(AD_1E\\)<\/p>\n<p>B. \u82e5\\(E\\)\u4e3a\\(CC_1\\)\u7684\u4e2d\u70b9\uff0c\u8fc7\\(A\\)\uff0c\\(D_1\\)\uff0c\\(E\\)\u7684\u5e73\u9762\u628a\u56db\u68f1\u53f0\u5206\u6210\u4e24\u90e8\u5206\u65f6\uff0c\u8f83\u5c0f\u90e8\u5206\u4e0e\u8f83\u5927\u90e8\u5206\u7684\u4f53\u79ef\u4e4b\u6bd4\u4e3a\\(3: 5\\)<\/p>\n<p>C. \\(\\overrightarrow{DA} + \\overrightarrow{BB_1} + \\displaystyle \\frac{1}{2}\\overrightarrow{DC} = \\overrightarrow{DA_1}\\)<\/p>\n<p>D. \u8bbe\\(DB_1\\)\u4e0e\u9762\\(AD_1C\\)\u7684\u4ea4\u70b9\u4e3a\\(O\\)\uff0c\u5219\\(\\displaystyle \\frac{DO}{OB_1} = \\displaystyle \\frac{2}{1}\\)<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"387\" height=\"250\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tuozhanjihe1.png\" alt=\"\" class=\"wp-image-4724\" srcset=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tuozhanjihe1.png 387w, http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tuozhanjihe1-300x194.png 300w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-7243436\" data-block-id=\"7243436\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-0f50caa\" data-block-id=\"0f50caa\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=4892\"><span class=\"stk-button__inner-text\">\u8bb2\u8bc4\u89c6\u9891<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:$AC$\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n<h5>\u9898\u76ee2<\/h5>\n<p>\u5982\u56fe\uff0c\u56db\u68f1\u9525\\(P-ABCD\\)\u4e2d\uff0c\\(PA\\perp\\)\u5e95\u9762\\(ABCD\\)\uff0c\\(PA=AC=2\\)\uff0c\\(BC=1\\)\uff0c\\(AB=\\sqrt{3}\\).<\/p> <p>(1)\u82e5\\(AD\\perp PB\\)\uff0c\u8bc1\u660e\uff1a\\(AD\\)\/\/\u5e73\u9762\\(PBC\\)\uff1b<\/p> <p>(2)\u82e5\\(AD\\perp DC\\)\uff0c\u4e14\u4e8c\u9762\u89d2\\(A-CP-D\\)\u7684\u6b63\u5f26\u503c\u4e3a\\(\\displaystyle \\frac{\\sqrt{42}}{7}\\)\uff0c\u6c42\\(AD\\).<\/p>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-78bcac0\" data-block-id=\"78bcac0\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-78bcac0-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-0a7929f\" data-v=\"4\" data-block-id=\"0a7929f\"><style>@media screen and (min-width:690px){.stk-0a7929f {flex:var(--stk-flex-grow, 1) 1 calc(72.1\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-df2ad24\" data-v=\"4\" data-block-id=\"df2ad24\"><style>@media screen and (min-width:690px){.stk-df2ad24 {flex:var(--stk-flex-grow, 1) 1 calc(27.9\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"235\" height=\"290\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tuozhanjihe2.png\" alt=\"\" class=\"wp-image-4729\"\/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-a114f40\" data-block-id=\"a114f40\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-eeac921\" data-block-id=\"eeac921\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=4828\"><span class=\"stk-button__inner-text\">\u8bb2\u8bc4\u89c6\u9891<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-d38758a\" data-block-id=\"d38758a\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-2933394\" data-block-id=\"2933394\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=4797\"><span class=\"stk-button__inner-text\">\u8bb2\u8bc4\u89c6\u9891<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:(1)\u7565\uff1b\uff082\uff09$AD=\\sqrt{3}$.\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n<h5>\u9898\u76ee3<\/h5>\n<p>\u5982\u56fe,\u70b9$P$\u4e3a\u6b63\u65b9\u5f62$ABCD$\u6240\u5728\u5e73\u9762\u5916\u4e00\u70b9,$M$\u4e3a$PA$\u4e2d\u70b9,$\\overrightarrow{DE}=\u03bb\\overrightarrow{DP}(0<\u03bb<1),$\u5e73\u9762$ABCD$\u22a5\u5e73\u9762$ABP$,$AB=BP=2,AB\u22a5BP.$\n<p>(1) \u5f53$\u03bb=\\displaystyle \\frac {2}{3}$\u65f6,\u6c42\u8bc1:$PD\u22a5$\u5e73\u9762$BEM$;\n<p>(2) \u5f53\u4e8c\u9762\u89d2$D &#8211; BM &#8211; E$\u7684\u6b63\u5f26\u503c\u4e3a$\\displaystyle \\frac {\\sqrt {6}}{9}$\u65f6,\u6c42\u03bb\u7684\u503c.\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-21c280a\" data-block-id=\"21c280a\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-7ff44cc\" data-block-id=\"7ff44cc\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=4882\"><span class=\"stk-button__inner-text\">\u89c6\u9891\u8bb2\u8bc4<\/span><\/a><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"447\" height=\"411\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f553.png\" alt=\"\" class=\"wp-image-4871\" srcset=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f553.png 447w, http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f553-300x276.png 300w\" sizes=\"auto, (max-width: 447px) 100vw, 447px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:\uff081\uff09\u7565\uff1b\uff082\uff09$\u03bb=\\displaystyle\\frac{1}{3}$.\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n<h5>\u9898\u76ee4<\/h5>\n<p>\u5982\u56fe\uff0c\u5728\u4ee5$A,B,C,D,E,F$\u4e3a\u9876\u70b9\u7684\u4e94\u9762\u4f53\u4e2d\uff0c\u56db\u8fb9\u5f62$ABCD$\u4e0e\u56db\u8fb9\u5f62$ADEF$\u5747\u4e3a\u7b49\u8170\u68af\u5f62\uff0c$EF\/\/ AD,$$BC\/\/ AD,$$AD=4,$$AB=$$BC=$$EF=2,$$ED=\\sqrt {10},$$FB=2\\sqrt {3}$\uff0c$M$\u4e3a$AD$\u7684\u4e2d\u70b9. \u6c42\u4e8c\u9762\u89d2$F &#8211; BM &#8211; E$\u7684\u6b63\u5f26\u503c.\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-d67e0df\" data-block-id=\"d67e0df\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-c4138f8\" data-block-id=\"c4138f8\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=5767\"><span class=\"stk-button__inner-text\">\u89c6\u9891\u8bb2\u8bc4<\/span><\/a><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"418\" height=\"392\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f554.png\" alt=\"\" class=\"wp-image-4872\" srcset=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f554.png 418w, http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f554-300x281.png 300w\" sizes=\"auto, (max-width: 418px) 100vw, 418px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:$\\displaystyle\\frac{4\\sqrt{3}}{13}$.\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n<h5>\u9898\u76ee5<\/h5>\n<p>\u5982\u56fe\uff0c\u56db\u8fb9\u5f62\\(ABCD\\)\u4e2d\uff0c\u6ee1\u8db3\\(AB \/\/ CD\\)\uff0c\\(\\angle ABC = 90^\\circ\\)\uff0c\\(AB = 1\\)\uff0c\\(BC = \\sqrt{3}\\)\uff0c\\(CD = 2\\)\uff0c\u5c06\\(\\triangle BAC\\)\u6cbf\\(AC\\)\u7ffb\u6298\u81f3\\(\\triangle PAC\\)\uff0c\u4f7f\u5f97\\(PD = 2\\)\uff0e\n<p>(1)\u6c42\u8bc1\uff1a\u5e73\u9762\\(PAC \\perp\\)\u5e73\u9762\\(ACD\\)\uff1b\n<p>(2)\u6c42\u76f4\u7ebf\\(CD\\)\u4e0e\u5e73\u9762\\(PAD\\)\u6240\u6210\u89d2\u7684\u6b63\u5f26\u503c\uff0e\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-ea24331\" data-block-id=\"ea24331\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-ea24331-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-34df024\" data-v=\"4\" data-block-id=\"34df024\"><style>@media screen and (min-width:690px){.stk-34df024 {flex:var(--stk-flex-grow, 1) 1 66.7\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-3b56491\" data-block-id=\"3b56491\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-6c9ddea\" data-block-id=\"6c9ddea\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"http:\/\/jhwk.online\/?p=5597\"><span class=\"stk-button__inner-text\">\u89c6\u9891\u8bb2\u8bc4<\/span><\/a><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5dc17e4\" data-v=\"4\" data-block-id=\"5dc17e4\"><style>@media screen and (min-width:690px){.stk-5dc17e4 {flex:var(--stk-flex-grow, 1) 1 33.3\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"296\" height=\"237\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tzltjh4.png\" alt=\"\" class=\"wp-image-5474\"\/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:$\\displaystyle\\frac{\\sqrt{15}}{5}$.\n<\/details>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n<h5>\u9898\u76ee6<\/h5>\n<p>\u5982\u56fe\uff0c\u5706\u9525\u7684\u8f74\u622a\u9762$PAB$\u662f\u8fb9\u957f\u4e3a$2$\u7684\u6b63\u4e09\u89d2\u5f62\uff0c$C$\uff0c$D$\u4e3a\u5e95\u9762\u5706\u5468\u4e0a\u7684\u70b9\uff0c\u4e14$\\triangle BCD$\u662f\u6b63\u4e09\u89d2\u5f62\uff0c$E$\u4e3a\u6bcd\u7ebf$PB$\u4e0a\u7684\u4e00\u52a8\u70b9\uff0e\n<p>(1) \u82e5$PA\\parallel$\u5e73\u9762$CDE$\uff0c\u6c42$PE$\u7684\u957f\uff1b\n<p>(2) \u82e5\u76f4\u7ebf$DE$\u4e0e\u5e73\u9762$BCD$\u6240\u6210\u89d2\u7684\u6b63\u5f26\u503c\u4e3a$\\dfrac{\\sqrt{30}}{10}$\uff0c\u6c42\u5e73\u9762$CDE$\u4e0e\u5e73\u9762$BCD$\u5939\u89d2\u7684\u4f59\u5f26\u503c\uff0e\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-030c24e\" data-block-id=\"030c24e\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-030c24e-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-a300ac9\" data-v=\"4\" data-block-id=\"a300ac9\"><style>@media screen and (min-width:690px){.stk-a300ac9 {flex:var(--stk-flex-grow, 1) 1 66.7\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-eadefb8\" data-block-id=\"eadefb8\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-03abfd6\" data-block-id=\"03abfd6\"><style>.stk-03abfd6 {border-top-left-radius:13px !important;border-top-right-radius:13px !important;border-bottom-right-radius:13px !important;border-bottom-left-radius:13px !important;overflow:hidden !important;border-style:solid !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:0px !important;}<\/style><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">\u5f55\u5236\u4e2d<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>\u7b54\u6848<\/summary>\n \n\n\n\n\u7b54\u6848:\uff081\uff09$\\displaystyle\\frac{1}{2}$\uff1b\uff082\uff09$\\displaystyle\\frac{2\\sqrt{7}}{7}$.\n<\/details>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-8976d35\" data-v=\"4\" data-block-id=\"8976d35\"><style>@media screen and (min-width:690px){.stk-8976d35 {flex:var(--stk-flex-grow, 1) 1 33.3\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"351\" height=\"325\" src=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f556.jpg\" alt=\"\" class=\"wp-image-5724\" srcset=\"http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f556.jpg 351w, http:\/\/jhwk.online\/wp-content\/uploads\/2025\/11\/tz\u7acb\u4f53\u51e0\u4f556-300x278.jpg 300w\" sizes=\"auto, (max-width: 351px) 100vw, 351px\" \/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-palette-color-2-color has-alpha-channel-opacity has-palette-color-2-background-color has-background is-style-wide\"\/>\n\n\n\n \n","protected":false},"excerpt":{"rendered":"<p>\u558a\u4f60\u6765\u8bb2\u9898\uff01 \u628a\u77e5\u8bc6\u8bb2\u7ed9\u522b\u4eba\u662f\u6700\u9ad8\u6548\u7684\u5b66\u4e60\u65b9\u6cd5\uff01\u5b66\u4e60\u91d1\u5b57\u5854\u7406\u8bba\u548c\u8d39\u66fc\u5b66\u4e60\u6cd5\u90fd\u8bc1\u660e\u4e86\u8fd9\u4e00\u70b9\u3002\u5494\u5494\u6765\u8bb2\u4e3a\u4f60\u63d0\u4f9b\u4e00\u4e2a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[],"class_list":["post-4721","post","type-post","status-publish","format-standard","hentry","category-tzzy"],"blocksy_meta":[],"_links":{"self":[{"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/posts\/4721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/jhwk.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4721"}],"version-history":[{"count":34,"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/posts\/4721\/revisions"}],"predecessor-version":[{"id":5771,"href":"http:\/\/jhwk.online\/index.php?rest_route=\/wp\/v2\/posts\/4721\/revisions\/5771"}],"wp:attachment":[{"href":"http:\/\/jhwk.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jhwk.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4721"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jhwk.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}