8-3 图示电路，t=0时开关由1打向2，则uc(0+)= 。<img src=https://huaweicloudobs.ahjxjy.cn/E423FFD24B1E13528DDAA6F4B711A3D2.jpg title=Image00037.jpg alt=Image00037.jpg/>

【单选题】【消耗次数：1】

① 10V

② 2V

③ 4V

④ 8V

参考答案：

复制

纠错

相关题目

【单选题】 8-5 图示电路在t=0时开关由1打向2，此前为稳态。则换路后电容电压uc(t)= 。<img src=https://huaweicloudobs.ahjxjy.cn/E423FFD24B1E13528DDAA6F4B711A3D2.jpg title=Image00037.jpg alt=Image00037.jpg/>

① <img class=jc-formula data-tex={ u }_{ C }(t)=10{ e }^{ -2t }V src=https://huaweicloudobs.ahjxjy.cn/AEB3C1C35AA2D6C241E3ED6216DF1840.png style=vertical-align: middle;/>

② <img class=jc-formula data-tex={ u }_{ C }(t)=2{ e }^{ -\frac { t }{ 2 } }V src=https://huaweicloudobs.ahjxjy.cn/BC66412EC8460F297F10DADE1F2923AE.png style=vertical-align: middle; width: 137px; height: 56px; width=137 height=56/>

③ <img class=jc-formula data-tex={ u }_{ C }(t)=4{ e }^{ -2t }V src=https://huaweicloudobs.ahjxjy.cn/C9EAE4D5169E1CE68AA79AF30E8A2493.png style=vertical-align: middle;/>

④ <img class=jc-formula data-tex={ u }_{ C }(t)=4{ e }^{ -\frac { t }{ 2 } }V src=https://huaweicloudobs.ahjxjy.cn/EC1087DF130EAE55FF242BB932512B7C.png style=vertical-align: middle;/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/9F1114FFD7E68B2E0D2CA48E4B785D19.jpg title=15.jpg alt=15.jpg/>

① <img src=https://huaweicloudobs.ahjxjy.cn/A91531BB38C9FC8B28A40C8B4EB62A5F.jpg title=15-1.jpg alt=15-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/F2A87C1169D8C03496E7BF21A44ADA76.jpg title=15-2.jpg alt=15-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/A58017B6209C12A4943D08542709622A.jpg title=15-3.jpg alt=15-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/A35C6D0A1F4222278AC50E322289FF7C.jpg title=15-4.jpg alt=15-4.jpg/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/2F4C3D6B0585F748B1640794B4B90290.jpg title=1.jpg alt=1.jpg/>

① <img src=https://huaweicloudobs.ahjxjy.cn/0B0D6448C5869994854FFDC9B75D616B.jpg title=1-1.jpg alt=1-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/98B6528353E403470E165EFB5A4C7848.jpg title=1-2.jpg alt=1-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/A49B9FB84A9755C0FE0C453C830DD632.jpg title=1-3.jpg alt=1-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/45A7711ED7F54F31B53A7C38725558C6.jpg title=1-4.jpg alt=1-4.jpg/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/E2FC9952241B5E56EDB2E0FF44619E4C.jpg title=3.jpg alt=3.jpg/>

① <img src=https://huaweicloudobs.ahjxjy.cn/8FDFB674E130594652F17AC900296836.jpg title=3-1.jpg alt=3-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/7605CE880AAE46AFA87E748B296ADD8C.jpg title=3-2.jpg alt=3-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/17872D8263A66DBA4A11F87829D1D237.jpg title=3-3.jpg alt=3-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/D8C5587F8BEDA054D133F56638482829.jpg title=3-4.jpg alt=3-4.jpg/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/A166E8F3B78BADD6D6EB1CAD486A0E5F.jpg title=7-B.jpg alt=7-B.jpg/>

① <img src=https://huaweicloudobs.ahjxjy.cn/D0ED682F2430EC298088881269230BFB.jpg title=7-1.jpg alt=7-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/B46D9212C069D0BBFD04C780DEC471C7.jpg title=7-2.jpg alt=7-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/220A926C7B32A702D2D7A4ACBC7F240B.jpg title=7-3.jpg alt=7-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/BDA8EB56FA572C00074FAFEDFE3A45D7.jpg title=7-4.jpg alt=7-4.jpg/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/46F8B240005D101982CAFB2B4E9E0AF8.jpg title=40.jpg alt=40.jpg/>

① 2

② 1

③ 0

④ 4

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/2F6A8A5E4E15AA971D35848E300E6978.jpg title=83-B.jpg alt=83-B.jpg/>

① <img src=https://huaweicloudobs.ahjxjy.cn/17E98B3BF43CE4E54B16B9D971B82B18.jpg title=83-1.jpg alt=83-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/25FC426D088624C674FC4B45B85E09C5.jpg title=83-2.jpg alt=83-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/E690CB53BCA06B86090B810CB5CBC86B.jpg title=83-3.jpg alt=83-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/114E711823718A1C99701D7E8ED894A5.jpg title=83-4.jpg alt=83-4.jpg/>

查看完整题目与答案

【单选题】 <img title=8.jpg alt=8.jpg src=https://huaweicloudobs.ahjxjy.cn/3BF8C9809E3C70166021324C0A0CBA3B.jpg/>

① <img title=8-1.jpg alt=8-1.jpg src=https://huaweicloudobs.ahjxjy.cn/B52940430041607146BA2F97A4FDB371.jpg/>

② <img title=8-2.jpg alt=8-2.jpg src=https://huaweicloudobs.ahjxjy.cn/9288DF0AB932AC638A12097F53D9901A.jpg/>

③ <img title=8-3.jpg alt=8-3.jpg src=https://huaweicloudobs.ahjxjy.cn/7880AD339C576A327235572018CD9EFA.jpg/>

④ <img title=8-4.jpg alt=8-4.jpg src=https://huaweicloudobs.ahjxjy.cn/30F0AA0ED4FFFCCDB0206E88441A7286.jpg/>

查看完整题目与答案

【单选题】 <img title=4-A.jpg alt=4-A.jpg src=https://huaweicloudobs.ahjxjy.cn/05A167D1B408242D8A3B0FD01C66BA31.jpg/>

① <img title=4-1.jpg alt=4-1.jpg src=https://huaweicloudobs.ahjxjy.cn/8B709FE15F3AF21F7E0D8F07BC5C3603.jpg/>

② <img title=4-2.jpg alt=4-2.jpg src=https://huaweicloudobs.ahjxjy.cn/C452A6FE120CC1D21E90186378A09C6D.jpg/>

③ <img title=4-3.jpg alt=4-3.jpg src=https://huaweicloudobs.ahjxjy.cn/85567006CF092ECA246BFDD13E44E5C3.jpg/>

④ <img title=4-4.jpg alt=4-4.jpg src=https://huaweicloudobs.ahjxjy.cn/F1B2C17BF83F1F155564E356FE1ABE10.jpg/>

查看完整题目与答案

【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/4B28F6872BEE2E7B15BC1C6B7E692AB4.png title=OXVVT)[~2IF6V3DTGJ[_B$4.png alt=OXVVT)[~2IF6V3DTGJ[_B$4.png/>（）

① <img src=https://huaweicloudobs.ahjxjy.cn/873A87A694529FBF9E61CECC8D32AD15.png title=7KL`R7UIL_P]DW0N[8EK[KI.png alt=7KL`R7UIL_P]DW0N[8EK[KI.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/0482F42FE70814EA365592BAB9C61ACA.png title=10J51VZQN9)TUXJX]Z(G$TI.png alt=10J51VZQN9)TUXJX]Z(G$TI.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/751D83F85DEEF3EB78C92369DD75A3B0.png title=DGXWNG[9S[S7]EF4KNDYBI9.png alt=DGXWNG[9S[S7]EF4KNDYBI9.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/B586A214C1A764A9FB5C483A9A8862A5.png title=LFZAH1[{@[OC455$C14(9JR.png alt=LFZAH1[{@[OC455$C14(9JR.png/>

查看完整题目与答案

随机题目

【单选题】 3.—____ I put my coat here? —Sorry, you ____.

① May--mustnt

② Do--dont

③ Can--neednt

④ May--cant

查看完整题目与答案

【单选题】 You must clean the classroom, ____ you?

① needn’t

② mustn’t

③ can’t

④ don’t

查看完整题目与答案

【单选题】 15. She had ____ to do, so she was free.

① something

② anything

③ everything

④ nothing

查看完整题目与答案

【单选题】 Could you ____ me a favor by shutting the door?

① do

② help

③ get

④ give

查看完整题目与答案

【单选题】 The students were all entertained in a Mexican restaurant, at Professor Brians ____.

① money

② pay

③ expense

④ loss

查看完整题目与答案

【单选题】 17. A survey was carried out on the death rate of new-born babies in that region, ____were surprising.

① as results

② which results

③ the results of it

④ the results of which

查看完整题目与答案

【单选题】 Every morning Mr. Smith takes a ____walk to his office.

① 20 minute

② 20 minutes

③ 20-minutes

④ 20-minute

查看完整题目与答案

【单选题】 20. She never sang, ____ dance.

① or she ever did

② or did she ever

③ nor did she ever

④ nor she ever did

查看完整题目与答案

【单选题】 He was ____ in his work and didn’t hear me come in.

① critical

② logical

③ typical

④ absorbed

查看完整题目与答案

【单选题】 In English some surnames ____ occupations or people. ?

① deserve ?

② desire ?

③ design ?

④ describe?

查看完整题目与答案