B\u00e0i 4 (trang 111 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0\u1ede \u0111\u00e2u xu\u1ea5t hi\u1ec7n \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng?<\/span><\/p>\nA. Xung quanh m\u1ed9t \u0111i\u1ec7n t\u00edch \u0111\u1ee9ng y\u00ean.<\/p>\n
B. Xung quanh m\u1ed9t d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i.<\/p>\n
C. Xung quanh m\u1ed9t \u1ed1ng d\u00e2y \u0111i\u1ec7n<\/p>\n
D. Xung quanh ch\u1ed7 c\u00f3 tia l\u1eeda \u0111i\u1ec7n.<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn \u0111\u00e1p \u00e1n D.<\/p>\n
B\u00e0i 5 (trang 111 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0\u0110\u1eb7t m\u1ed9t h\u1ed9p k\u00edn b\u1eb1ng s\u1eaft trong \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng. Trong h\u1ed9p k\u00edn s\u1ebd<\/span><\/p>\nA. c\u00f3 \u0111i\u1ec7n tr\u01b0\u1eddng<\/p>\n
B. c\u00f3 t\u1eeb tr\u01b0\u1eddng<\/p>\n
C. c\u00f3 \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng<\/p>\n
D. kh\u00f4ng c\u00f3 c\u00e1c tr\u01b0\u1eddng n\u00f3i tr\u00ean.<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn \u0111\u00e1p \u00e1n D<\/p>\n
B\u00e0i 6 (trang 111 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0\u0110i\u1ec3m n\u00e0o d\u01b0\u1edbi \u0111\u00e2y kh\u00f4ng thu\u1ed9c v\u1ec1 n\u1ed9i dung c\u1ee7a thuy\u1ebft \u0111i\u1ec7n t\u1eeb Mac \u2013 xoen?<\/span><\/p>\nA. T\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111i\u1ec7n t\u00edch ho\u1eb7c gi\u1eefa \u0111i\u1ec7n t\u00edch v\u1edbi \u0111i\u1ec7n tr\u01b0\u1eddng v\u00e0 t\u1eeb tr\u01b0\u1eddng.<\/p>\n
B. M\u1ed1i quan h\u1ec7 gi\u1eefa \u0111i\u1ec7n t\u00edch v\u00e0 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng v\u00e0 t\u1eeb t\u01b0\u1eddng.<\/p>\n
C. M\u1ed1i quan h\u1ec7 gi\u1eefa s\u1ef1 bi\u1ebfn thi\u00ean theo th\u1eddi gian c\u1ee7a t\u1eeb tr\u01b0\u1eddng v\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y.<\/p>\n
D. M\u1ed1i quan h\u1ec7 gi\u1eefa s\u1ef1 bi\u1ebfn thi\u00ean theo th\u1eddi gian c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng v\u00e0 t\u1eeb tr\u01b0\u1eddng.<\/p>\n
L\u1eddi gi\u1ea3i:<\/b><\/p>\n
Ch\u1ecdn \u0111\u00e1p \u00e1n A.<\/p>\n
\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
B\u00e0i 1 (trang 111 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e1t bi\u1ec3u m\u1ed1i quan h\u1ec7 gi\u1eefa s\u1ef1 bi\u1ebfn thi\u00ean theo th\u1eddi gian c\u1ee7a t\u1eeb tr\u01b0\u1eddng v\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. L\u1eddi gi\u1ea3i: N\u1ebfu t\u1ea1i m\u1ed9t n\u01a1i c\u00f3 m\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thi\u00ean theo th\u1eddi gian th\u00ec t\u1ea1i n\u01a1i \u0111\u00f3 xu\u1ea5t hi\u1ec7n m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. B\u00e0i 2 (trang 111 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1303],"tags":[1428,1427],"yoast_head":"\n
Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 111 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e1t bi\u1ec3u m\u1ed1i quan h\u1ec7 gi\u1eefa s\u1ef1 bi\u1ebfn thi\u00ean theo th\u1eddi gian c\u1ee7a t\u1eeb tr\u01b0\u1eddng v\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. L\u1eddi gi\u1ea3i: N\u1ebfu t\u1ea1i m\u1ed9t n\u01a1i c\u00f3 m\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thi\u00ean theo th\u1eddi gian th\u00ec t\u1ea1i n\u01a1i \u0111\u00f3 xu\u1ea5t hi\u1ec7n m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. B\u00e0i 2 (trang 111 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-30T09:18:40+00:00\" \/>\n<meta name=\"author\" content=\"H\u00e0 Trang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"H\u00e0 Trang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/\",\"url\":\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/\",\"name\":\"Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng\",\"isPartOf\":{\"@id\":\"https:\/\/lop12.edu.vn\/#website\"},\"datePublished\":\"2018-03-30T09:18:40+00:00\",\"dateModified\":\"2018-03-30T09:18:40+00:00\",\"author\":{\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\"},\"breadcrumb\":{\"@id\":\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/lop12.edu.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ch\u01b0\u01a1ng 4 – B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/lop12.edu.vn\/#website\",\"url\":\"https:\/\/lop12.edu.vn\/\",\"name\":\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\",\"name\":\"H\u00e0 Trang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"caption\":\"H\u00e0 Trang\"},\"url\":\"https:\/\/lop12.edu.vn\/author\/trangvth2\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/","og_locale":"en_US","og_type":"article","og_title":"Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng","og_description":"B\u00e0i 1 (trang 111 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e1t bi\u1ec3u m\u1ed1i quan h\u1ec7 gi\u1eefa s\u1ef1 bi\u1ebfn thi\u00ean theo th\u1eddi gian c\u1ee7a t\u1eeb tr\u01b0\u1eddng v\u00e0 \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. L\u1eddi gi\u1ea3i: N\u1ebfu t\u1ea1i m\u1ed9t n\u01a1i c\u00f3 m\u1ed9t t\u1eeb tr\u01b0\u1eddng bi\u1ebfn thi\u00ean theo th\u1eddi gian th\u00ec t\u1ea1i n\u01a1i \u0111\u00f3 xu\u1ea5t hi\u1ec7n m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng xo\u00e1y. B\u00e0i 2 (trang 111 […]","og_url":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2018-03-30T09:18:40+00:00","author":"H\u00e0 Trang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"H\u00e0 Trang","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/","url":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/","name":"Ch\u01b0\u01a1ng 4 - B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2018-03-30T09:18:40+00:00","dateModified":"2018-03-30T09:18:40+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/chuong-4-bai-21-dien-tu-truong\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"Ch\u01b0\u01a1ng 4 – B\u00e0i 21: \u0110i\u1ec7n t\u1eeb tr\u01b0\u1eddng"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lop12.edu.vn\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45","name":"H\u00e0 Trang","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g","caption":"H\u00e0 Trang"},"url":"https:\/\/lop12.edu.vn\/author\/trangvth2\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24780"}],"collection":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=24780"}],"version-history":[{"count":1,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24780\/revisions"}],"predecessor-version":[{"id":24781,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/24780\/revisions\/24781"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=24780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=24780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=24780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}