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【多选题】
造成安全事故的原因包括下列哪项?A.
人的因素
B.
物的因素
C.
人与物的综合因素
D.
不可抗力的因素
E.
以上答案都对
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【简答题】Both classes of engines are of very similar construction. But as the higher pressure is called upon in cylinders, it has to be of more substantial construction, and is thus heavier. In general, the di...
【简答题】Both classes of engines are of very similar construction. But as the higher pressure is called upon in cylinders, it has to be of more substantial construction, and is thus heavier. In general, the di...
【单选题】Both classes engines are very similar construction.
A.
of, of
B.
and, of
C.
and, in
D.
of, in
【简答题】Both classes of engines are of very similar construction. But as the higher pressure is called upon in cylinders, it has to be of more substantial construction, and is thus heavier. In general, the di...
【简答题】最常用的组织固定液是
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