题目内容

发生特大质量事故,事故单位要在()小时内向有关单位提出书面报告。

A. 6
B. 12
C. 48
D. 24

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道路危险货物运输从业人员的头部受到毒性物质污染时,首先应注意____。

A. 打电话求援
B. 用大量清水冲洗
C. 用毛巾擦抹干净

ISM第九章与第十章中的“不符合规定的情况”有什么异同?

A user executes the statement; PURGE BINARY LOGS TO 'mysql-bin.010'; What is the result?()

A. It deletes all binary log files, except 'mysql-in.010'
B. It deletes all binary log files up to and including 'mysql-bin.010'
C. It deletes all binary log files before 'mysql-bin.010'
D. It deletes all binary log files after 'mysql-bin.010'

ZD6型电动转辙机的自动开闭器各接点片压力均匀,接触压力不小于()。

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