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第十一章家庭用电

Authored by Sonnie Wong

Other

9th Grade

Used 54+ times

第十一章家庭用电
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16 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

进户线有几种?

2

3

4

5

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

火线与地面之间的电压为?

220V

230V

420V

430V

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

以下哪一个情况会造成测电笔发光?

使用测电笔时,手不接触尾部的金属体

当测插座左下角的插孔时

当中线断路时,测电笔插入插座左下角的插孔

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

电路中电流过大是什么原因造成的?

电路过载和短路时

用电器漏电

灯泡的钨丝熔断

用太粗的电线

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

家庭电路中的保险丝通常选用(   )。                                           

 

铜丝   

  铝丝           

铅锑合金

银丝

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在家庭电路中,下列哪一种情况不会造成触电事故?

触摸没有安装地线的用电器

人一只手接触火线,另一只接触中线

人站在地上,一只手接触中线

人站在地上,一只手接触火线

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

电路的保护装置是?

熔断器

电能表

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