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【多选题】
插入式振动器振动混凝土时应 （）A.
快插慢拔
B.
慢插慢拔
C.
慢插快拔
D.
插入式振动器振捣时移动间距，不宜大于作用半径的1.5倍
E.
应垂直插入，并插入下层混凝土50mm，以促使上下层砼结合成整体
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【单选题】Who said there was no need to panic buy?
A.
governments
B.
hospitals
C.
supermarkets
D.
suppliers
【简答题】Though for quite a long time I was not _____1____with my old job, I never thought of spending much time on career planning or career _____2______. I was very busy at work every day. After work, I came...
【单选题】(单项选择题)()不是导游讲解生动性的体现。
A.
熟悉讲解内容，巧妙组织，层次分明，高潮迭起，有轻有重
B.
结合景观，善于利用中外名人名言，民间传说
C.
勇于探索，敢于创新
D.
方式上、结构上和技巧上采用多种形式
【单选题】()不是导游讲解生动性的体现
A.
熟悉讲解内容，巧妙组织，层次分明，高潮迭起，有轻有重
B.
结合景观，善于利用中外名人名言，民间传说
C.
勇于探索，敢于创新
D.
方式上，结构上和技巧上采用多种形式
【简答题】it has turned out, there was no need to worry about their safety.A．WhileB．As ifC．Now that D．As____it has turned out, there was no need to worry about their safety. A．While B．As if C．Now that D．As
【单选题】There was no need to wait for a table. They______reservations for us.
A.
should have made
B.
must have made
C.
should make
D.
have made
【判断题】There was no need to sum up the former experience and go ahead steadily with the reformof China’s railways in the long term.
A.
正确
B.
错误
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