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问题 单项选择题

你在检查现场搅拌的混凝土资料时，应见到（）混凝土的《混凝土开盘鉴定》记录。

A、C20级和C20级以上

B、C20级以下

C、≥C40级

D、任何强度等级

答案

参考答案：A

听力题

根据短文内容填写单词，使短文意思完整，一空一词。（每空1分，共10分）

Do you   81  robots(机器人)?   82   a lot of robots in the world now. Some of the robots can walk, sing and dance. Some can talk  83  people. Most of   84  can do heavy work. In a few years, a robot can will be able to(能够)   85  a car, a train, a ship or a plane. In a hospital, a restaurant or a shop, we may    86   a robot at work. At that time, we don’t   87  to do the cooking   88   go shopping ourselves. We   89   give orders(命令) to a robot and it can do all the housework. Robots can be our good   90  .
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判断题

目前我国证券交易印花税是向成交双方双向收取。( )
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