下列选项为某变速器一、二、三、四挡的传动比，则三挡的传动比为（）。 A: 0.969 B: 1.286 C: 1.944 D: 3.455

测量某[tex=4.214x1.286]qKjKBzdmW/ITuG9cPkOeAg==[/tex]的漏源电压，栅源电压值如下，其[tex=1.714x1.286]gmU2cywKcS1DaSpFogJmLOfKfEj/vnXmYqY7BTDW6tw=[/tex]、[tex=1.714x1.286]MiBX2R3sOmrGI3PeNzQKOA==[/tex]或[tex=1.714x1.286]f4w775SJShLfoONc1jaLqKJSuRYTv5bCFH/Q2ovkveg=[/tex]、[tex=1.643x1.286]/2s7vN1oMPbbT/Y9GCfZvGRycswIF6JpCppqWFqjqP8=[/tex]值也已知，试判断该管工作在什么区域（饱和区，可变电阻区，预夹断临界点或截止）．（1）[tex=4.214x1.286]8SD38C5H6Pkfvgha7I6rKjbeMcm/vL0o7/KMw7OpA9U=[/tex]，[tex=4.214x1.286]H6zzvoZisDZe1McHFZkBr6rbb0ar6IQAOrLj/uKkaxA=[/tex]，[tex=4.286x1.286]jPrP7Dm+L0eyLbIiCQP6fsedC2njLWAeBxv+ytEoOrI=[/tex]；（2）[tex=4.214x1.286]8nuYq1mduhna8bQxNFkkwMSdDbagXxZxzPGqESyB1VY=[/tex]，[tex=4.214x1.286]H6zzvoZisDZe1McHFZkBr6rbb0ar6IQAOrLj/uKkaxA=[/tex]，[tex=4.286x1.286]jPrP7Dm+L0eyLbIiCQP6fsedC2njLWAeBxv+ytEoOrI=[/tex]；（3）[tex=4.214x1.286]8SD38C5H6Pkfvgha7I6rKjbeMcm/vL0o7/KMw7OpA9U=[/tex]，[tex=4.214x1.286]b8wKa/NhkzYs3u8hGi+FcxSO39+sESiP5+ulHQMVZxw=[/tex]，[tex=5.071x1.286]JkpD9eT6fbY4VziDQ5+LO69kMgJBSIC6vdgTt3mDv7Q=[/tex]；（4）[tex=4.214x1.286]ms1eWg8OF9Fbjcm+LlB0f03ZC9bpjTR9Z18AGnYZBE4=[/tex]，[tex=4.929x1.286]tGrINwizd1Wo84zjHZOeR8uw2m3hu+7xo3+IFd2dwOc=[/tex]，[tex=5.0x1.286]G9oz9SJxdG9aKRI0KoJjyiSvN7B3QvaHTnl7tLpWuCo=[/tex]；（5）[tex=4.929x1.286]Ahkc3//EHhFGedaIZADnOGHaG6eTfXgybAeFgFs11Xc=[/tex]，[tex=4.929x1.286]ZUmStY4OdFbAmDhtsHopyZliLDML30pAvEz9xnwoIFI=[/tex]，[tex=5.0x1.286]UeW67MvHjoVPxTLW839dv2oNhDgUe4k7+sWsocYFSNI=[/tex]；（6）[tex=4.214x1.286]8SD38C5H6Pkfvgha7I6rKjbeMcm/vL0o7/KMw7OpA9U=[/tex]，[tex=4.929x1.286]PmsYa0xjvHnECUYQjpPw+4DfkbK5SEKoIzf+i3joIxM=[/tex]，[tex=5.0x1.286]UeW67MvHjoVPxTLW839dv2oNhDgUe4k7+sWsocYFSNI=[/tex]；（7）[tex=4.929x1.286]Ahkc3//EHhFGedaIZADnOGHaG6eTfXgybAeFgFs11Xc=[/tex]，[tex=4.929x1.286]YSrUmXECiQE8FPztoRorqexE+Snq5qSNksW7VcDtLzI=[/tex]，[tex=5.786x1.286]UeW67MvHjoVPxTLW839dv3OmtD6MilA0ASNalTuA7LA=[/tex]．

下列量子数取值错误的是 未知类型：{'options': ['[tex=4.214x1.286]xkVo3jlh5fFxJ72EnPoQRTz4v85McYCFbNtbgACytBg=[/tex]', '[tex=5.0x1.286]Z2cbM/03oyJdP4w8Ce/KGeBUH31Tgcz6Xyyb9XTmtAk=[/tex]', '[tex=3.214x1.286]Pm3MMq3dD71x80s4oyrk9w==[/tex]', '[tex=4.214x1.286]Bv7/9+ZhXyV2hc28r1UFwdVdTBQTlyx7rSSThaCSKNI=[/tex]'], 'type': 102}

设[tex=4.571x1.214]Qr1ur9o1tnL8pE/ViPlahg==[/tex]试证[tex=4.214x1.286]BfOAZUL9p9xGZiIwnTEUfzrJTlv4MVJDyQ0KNINdxqQ=[/tex]

利用已经给出的导数公式，求[tex=4.214x1.286]/pPUZG9AdusL2HgzvBk2nQ==[/tex]的导数

部分性生长激素缺乏时，GH 刺激试验 GH 峰值 未知类型：{'options': ['[tex=4.214x1.286]jPlrLdougFk0VL/pKWlXvxt9CjNP8cUke3YubTPmamY=[/tex]', '[tex=4.214x1.286]IYuIDXxqWI+mw4JjuvsrSaFwzIVayzpLlx5rMKNls1E=[/tex]', '[tex=3.714x1.286]NhLCKj51Zu+hhdTY7PnE9n6f4xMFcy39vZyg1+N0FZY=[/tex]', '[tex=3.714x1.286]LXcE21ZIUpwSEmnSpMMruqu9iUD4tCa1wjL/5Q4Dm6g=[/tex]', '[tex=4.929x1.286]JHLtqm8EjoixUrvqcMgG7+2VkvVYVlqxw7WGkz+hTS0=[/tex]'], 'type': 102}

设[tex=8.071x4.071]0Oc6OdDyTxw5ASPscCgHyYkEbFHChwDgBaPuhRJ6a3l60AcUoOMC9zVwvEt75XsDzTaV4eWnVfNOwc4xhVG7mgxke0tlm1R3hV62UZNyt6E=[/tex]，求[tex=3.571x1.286]I25EwhoNS80XrVc5ocH4aQ==[/tex]，[tex=4.214x1.286]lxcqgScMtemOzlXJF/zD4qlK+OAWQv0Hx3AJaNQuAO0=[/tex]。

设[tex=0.857x1.286]RFrkvDyvKeTvv0Y+OA8C+g==[/tex]为[tex=2.643x1.286]yu9Fqc429BTsCWKDfgGy8g==[/tex]矩阵，[tex=0.786x1.286]HWURx4IKz9KeoQH1jp6DLQ==[/tex]为[tex=2.643x1.286]6/RzClznJ0ApNmeA+nDTlA==[/tex]矩阵，[tex=0.786x1.286]3v6qW1kOX67rLWteAhaBrQ==[/tex]为[tex=0.857x1.286]VtHyCG+ZQg7fAIyRU+W9ow==[/tex]阶单位矩阵，若[tex=3.714x1.286]Bki3BOAz+QT9YJQnEyH/dnzOhkmI07ZjW11dqEuhp+o=[/tex]，则（  ）。 未知类型：{'options': ['[tex=4.214x1.286]fzez9mehVjU7B49/3BSlwlAyLcdcXlP7qjXa0tgJ1yA=[/tex]，[tex=4.214x1.286]ZigaOerRNU+LvUzHS0KaO4x9grXJG+qUz7IwiS5DP4c=[/tex]', '[tex=4.214x1.286]fzez9mehVjU7B49/3BSlwlAyLcdcXlP7qjXa0tgJ1yA=[/tex]，[tex=3.929x1.286]ZigaOerRNU+LvUzHS0KaO/WiPhBwDBbkm9iT1JDDrpU=[/tex]', '[tex=3.929x1.286]fzez9mehVjU7B49/3BSlwqHXH51nhYA9ZFZ/8tFS9J4=[/tex]，[tex=4.214x1.286]ZigaOerRNU+LvUzHS0KaO4x9grXJG+qUz7IwiS5DP4c=[/tex]', '[tex=3.929x1.286]fzez9mehVjU7B49/3BSlwqHXH51nhYA9ZFZ/8tFS9J4=[/tex]，[tex=3.929x1.286]ZigaOerRNU+LvUzHS0KaO/WiPhBwDBbkm9iT1JDDrpU=[/tex]'], 'type': 102}

下列表达式的值是多少?[tex=3.429x1.286]s6rOvivWU9oc+YUqNC37xQ==[/tex][tex=3.786x1.286]7EL0zurWK0RICgxZmfU0og==[/tex][tex=4.214x1.286]8goTZS6QyiDAVizcBz1qlw==[/tex]

设[tex=9.857x4.071]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU5N/AgS8Q49YXR0znVMu8toIwdZA5/L695uyg1eMsQouIFvQzvuf9idKGOlhnJmk0AfQu60ZEu8vV9Hc+WObaoZ[/tex]，求[tex=3.571x1.286]I25EwhoNS80XrVc5ocH4aQ==[/tex]，[tex=4.214x1.286]lxcqgScMtemOzlXJF/zD4qlK+OAWQv0Hx3AJaNQuAO0=[/tex]。