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【判断题】
化学品安全技术说明书规定的内容,如果不存在的可以删除或合并,其顺序也可以变更。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Policemen often __ thieves __. They are __ dangerous. [ ]
A.
work with, every day, kind of
B.
do good with, every day, kind of
C.
work with, everyday, a little
D.
work hard, everyday, kind of
【单选题】You should make good use of every _____ minute to study. [ ]
A.
cautious
B.
dangerous
C.
expensive
D.
precious
【单选题】Keep compartment ______ as the gas given off can be dangerous.
A.
in good order
B.
well clean
C.
well ventilated
D.
more room
【单选题】None of us was good at swimming, so the crossing of this dangerous river was really a_________.
A.
motivation
B.
symptom
C.
conflict
D.
challenge
【单选题】We must always be careful with ______. It's our good servant as well as a dangerous enemy. [ ]
A.
electricity
B.
electrical
C.
electric
D.
electronic
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