单项选择题
()what he said, he was not even there when the crime was being committe.
A.Concerning
B.As to
C.According to
D.Judging by
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A.running
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C.turning
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None of his arguments seemed to me to().
A.hold up
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多项选择题
光气及光气化中,装置设有多套安全联锁系统,紧急停工是在事故状态时导致紧急泄压系统自动或手动触发。紧急停工的原则有:()等。
A.装置发生重大事故,多方处理不能消除,也不能维持循环,应进行紧急停工
B.外围装置发生事故,严重威胁本*装置安全生产,应进行紧急停工
C.设备发生故障,备用设备无法修复或启动,威胁装置安全生产,应进行紧急停工
D.装置发生火灾,应进行紧急停工
