单项选择题

绝缘架空地线应视为带电体。作业人员与绝缘架空地线之间的距离不应小于（）m（l000kV为0.6m）

A.0.2
B．0.3
C．0.4
D．0

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单项选择题

Marcus has five questions to ask his reader in a routine information request letter. What is the best way to present these questions?

A、As a separate enclosure
B、In a bulleted or numbered list in the body of his letter
C、In paragraph form in the body of his letter
D、In a follow-up e-mail

单项选择题

在超过（）m深的基坑内作业时，向外抛掷土石应防止土石回落坑内，并做好防止土层塌方的临边防护措施

A.1
B．1.5
C．2
D．2