试题与答案

如图所示,Dl、D2规格相同的两个小灯泡,L是带有铁芯的电阻忽略不计的电感线圈,

题型:选择题

题目:

如图所示,Dl、D2规格相同的两个小灯泡,L是带有铁芯的电阻忽略不计的电感线圈,下列说法正确的是(  )

A.开关S接通瞬间,Dl、D2同时亮起来

B.开关S接通稳定后,Dl、D2亮度相同

C.开关S断开瞬间,Dl、D2同时熄灭

D.开关S断开的瞬间,D1立即熄灭,D2闪亮一下再逐渐熄灭

答案:

答案:A

试题推荐
题型:听力题

根据下列句子各句句意和空白之后的汉语提示词,在句子右边的横线上写出空缺处相应单词的正确形式,每空只写一词。

小题1:Zhou Gu was _____________(采访)by the local newspaper. 

小题2:They quarreled once, but they are quite _____________(友好) now.

小题3:Annie Sullivan was a lively young woman with ___________(耐心)and imagination.

小题4:I think reading English newspaper is a good way of _________(改进)your English.

小题5:What Tom did during the sports meet made all of us _______________(失望).

小题6:None of us ______________(意识到)the danger we were in.

小题7:I’ll have several travels on business in ____________(八月).

小题8:It’s _____________(必要的) for us to master a foreign language nowadays.

小题9:In England, _____________(距离) is measured in miles, not in kilometres.

小题10:We couldn’t hear him ____________ (清晰地)so we asked him to speak louder.

查看答案
微信公众账号搜索答案