单项选择题

中性点直接接地的交流系统中，当接地保护动作不超过1min切断故障时，电力电缆导体与绝缘屏蔽层之间的额定电压选择，下列哪项符合规范要求？（ ）

A.应不低于100%的使用回路工作相电压选择
B.应不低于133%的使用回路工作相电压选择
C.应不低于150%的使用回路工作相电压选择
D.应不低于173%的使用回路工作相电压选择
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多项选择题
110kV配电装置中管形母线采用支持式安装时，下列哪些措施是正确的？（ ）
A.应采取防止端部效应的措施
B.应采取防止微风震动的措施
C.应采取防止母线热胀冷缩的措施
D.应采取防止母线发热的措施
未分类题
听力原文：M: Excuse mE.Is this road to Turner's Street?W: Yes.M: Is it very far from here?W: No, not very far. About ma hour's walk.M: Are there any buses going there?W: Oh, yes, but the buses don't come very often. Only about 4 times a day.M: When does the next bus come along?W: Not until half past seven. You will arrive there if you walk.M: Well, thank you. I'd better walk. I can't wait an hour and a half for a bus.Where is the man?A.On his way to Tumer's Street.B.In a bus to Turner's Street.C.At the bus stop.
A.M:
B.
M:
C.
M:
D.
M:
E.
Where
F.On
G.
B.In
H.
C.At
I.
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