筆試補充練 2 - B

筆試補充練 2 - B

10th Grade

95 Qs

quiz-placeholder

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筆試補充練 2 - B

筆試補充練 2 - B

Assessment

Quiz

World Languages

10th Grade

Hard

Created by

Charlene Cher

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95 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

固定裝置,其接地故障環路阻抗任何一點,雖在多久自動斷電動?

3秒

4秒

5秒

6秒

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列那一類不可作接地極用途:

鋼地樁

銅接地帶

銅接地極

鋼水喉

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

香港發電廠採用____發電?

火力

水力

風力

核能

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

臨時供電的總掣,需在下列那種情況跳脫?

過大電阻及電飯

過大電線及配件

漏電及短路

沒有警句情況下

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

導體的絕緣物,需抵受下列那一項?

機械及電氣應力

熱力

化學應力

以上全對

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

直接埋藏在行人路的電纜最少距離地面多深?

500毫米

350毫米

400毫米

450毫米

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

沿牆或結構物表面的電纜,用扣帶固定,其直徑不可超過____毫米

10

15

20

25

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