如图所示,A、B是两个完全相同的小灯泡,L为自感系数很大、电阻阻值可以忽略的线圈

题型:多选题

问题:

如图所示,A、B是两个完全相同的小灯泡,L为自感系数很大、电阻阻值可以忽略的线圈,下列说法中正确的是(  )

A.闭合电键S时,A、B先同时发光,随后A灯变暗直至熄灭,B灯变亮

B.闭合电键S后,A、B亮度始终相同

C.断开电键S时,A、B同时熄灭

D.断开电键S时,B立即熄灭,A突然闪亮一下再熄灭

考点:自感现象
题型:多选题

短文改错(共10小题;每小题1.5分,满分15分)

此题要求改正所给短文中的错误。对标有题号的第一行作出判断:如无错误,在答题卡相应的的位置上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词在答题卡相应的位置上用斜线(\)划掉。

此行缺一个词:在答题卡相应的位置上写出该加的词,

此行错一个词:在答题卡相应的位置上写出改正后的词。

注意:原行没有错的不要改。

It’s a story happened five years ago. Li Hua, who lived in the    小题1:                  

city, came to visit her uncle in our village. She and I became    小题2:                 

good friend. One day, I went to her uncle’s to do homework        小题3:                 

with her. But she wasn’t in. I found beautiful clock on her bed.    小题4:                  

I became very curiously and took it to have a look. Since I          小题5:                   

have never seen a clock before, I touched it here and there.          小题6:                     

But suddenly, I found the clock wasn’t working. I felt worrying   小题7:                  

and wanted to run. But I didn’t. Later that day, I told Li Hua   小题8:                 

I had broken her clock. She smiled, said her little cousin had    小题9:                

dropped it onto the ground this morning and it had stopped working since then.小题10:                

题型:多选题

患儿女性,1岁,身高54.6cm,体重5.5kg,Hb90g/L,因"视网膜病变,动脉导管未闭",拟行"动脉导管结扎术"。

对患儿的液体处理,下列哪项正确()。

A.输5%葡萄糖液

B.限制输液、适当利尿

C.输生理盐水

D.只能输胶体液

E.只能输糖盐水

题型:多选题

试述中国基础实施建设的基本轨迹。

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观测场内仪器布置有哪些要求?

题型:多选题

现代营销观念基于四个主要支柱是()、()、()、()。

A、目标市场、顾客忠诚、目标营销和竞争优势

B、细分市场、顾客忠诚、目标营销和盈利能力

C、细分市场、顾客忠诚、整合营销和竞争优势

D、目标市场、顾客需要、整合营销和盈利能力

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