題庫堂
檢索
題庫堂
首頁
數學
英文學習
政治學
統計學
經濟學
藥理學
中醫藥物學
財政學
法學知識
公共行政
警察學
BI規劃師
財務管理
公共衛生學
工程經濟學
電力電子學
當前位置:
首頁
20.处在匀强磁场中的矩形线圈abcd,以恒定的角速度绕ab边转动, 磁场方向平行于纸面并与ab垂直。在t=0时刻,线圈平面与纸面重合(如图),线圈的cd边离开纸面向外运动。若规定由a→b→c→d→a
問題詳情
20.处在匀强磁场中的矩形线圈abcd,以恒定的角速度绕ab边转动, 磁场方向平行于纸面并与ab垂直。在t=0时刻,线圈平面与纸面重合(如图),线圈的cd边离开纸面向外运动。若规定由a→b→c→d→a方向的感应电流为正,则能反映线圈中感应电流I随时间t变化的图线是
參考答案
答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0) #
個人:尚未作答書單:Practice
上一篇 :
14.如图所示,位于光滑固定斜面上的小物块P受到一水平向右的推力F的作用。已知物块P沿斜面加速下滑。现保持的方向不变,使其减小,则加速度(A)一定变小(B)一定变大(C)一定不变(D)可能变小,可能变
下一篇 :
22. They might just have a place _______ on the writing course — why don't you give it a try?(A
資訊推薦
23. Try not to cough more than you can _______ since it may cause problems to your lungs.(A)check (B
24. If we _______ now to protect the environment, we'll live to regret it.(A)hadn't acted
33. "You can't judge a book by its cover," _______.(A)as the saying goes old (B)goes
25. Tony can hardly boil an egg, still _______ cook dinner.(A)less (B)little (C)much (D) more
34. It was a real race _______ time to get the project done. Luckily, we made it.(A)over (B)by (C)fo
【題組】43. (A)hands (B)feet (C)keys (D) handles
26. Police have found _______ appears to be the lost ancient statue.(A)which (B)where (C)how (D) wha
【題組】53. (A)easy (B)heavy (C)major (D) extra
35. The sunlight is white and blinding, _______ hard-edged shadows on the ground.(A)throwing (B)bein
【題組】44. (A)place (B)action (C)play (D) effect
27. When I first met Bryan I didn't like him, but I _______ my mind.(A)have changed (B)change (
【題組】54. (A)forgotten (B)repeated (C)conducted (D) finished
I went to a group activity, “Sensitivity Sunday”, which was to make us more 36 the problems faced by
【題組】63.Where does this text probably come from?(A)Science fiction.(B)Children’s literature.(C)A adve
【題組】45. (A)operation (B)communication (C)transportation (D) production
28. The driver wanted to park his car near the roadside but was asked by the police _______.(A)not t
【題組】55. (A)weaknesses (B)challenges (C)anxieties (D) illnesses
【題組】37. (A)cure (B)prevent (C)adopt (D) analyze
CIt happened to me recently. I was telling someone how much I had enjoyed reading Barack Obama’s Dea
【題組】46. (A)exploration (B)education (C)experiment (D) entertainment
29. The door _______ open, no matter how hard she pushed.(A)shouldn't (B)couldn't (C)would
ASome people will do just about anything to save money. And I am one of them. Take my family’s last
【題組】38. (A)instead (B)strangely (C)as usual (D) like me
【題組】65. Which of the following is a “guilty secret” according to the World Book Dy report?(A)Charles
【題組】47. (A)flexible (B)safe (C)starting (D) comfortable