绝缘子的底座、套管的法兰、保护网(罩)及母线支架等可接近裸露导_爱下问搜题

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问题判断题

绝缘子的底座、套管的法兰、保护网(罩)及母线支架等可接近裸露导体应接地(PE)或接零(PEN)可靠，应作为接地(PE)或接零(PEN)的接续导体。( )

答案

参考答案：错

补全对话，情景问答

a. What time do you usually get up on weekdays
b. I usually have some cakes and a glass of milk
c. Class begins at eight o'clock
d. I get home at five-thirty
e. When do you play games
f. I have lunch at school
g. When do you get home

A: Hi, Lucy!    1   ?
B: Well, I live near my school, so I get up at a quarter to seven. I never go to school late.
A: Do you have breakfast at home?
B: Yes,    2   .
A: When do you go to school?
B:    3   , so I go to school at seven forty-five.
A:    4   ?
B: I leave school at five past five and    5   .

问答题简答题

法规规定“防止倒灌”，对配液罐可否采用正压保压取代“空气阻断？”（TZ-51、FL-29）