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【判断题】
进行水泥凝结时间测定时,临近初凝时间时,每隔5min测定一次,临近终凝时间时,每隔15min测定一次。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】阅读理解。 This is a talk by a London taxi (出租车) driver. 'I've been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis.' 'It's a nice job most of time. You meet a lot of peop...
【单选题】—Why ______ you _______ give such a talk? —Well, I've applied for this job. They've asked all the applicants to give a talk as part of the selection process. [ ]
A.
don't; have to
B.
had; had to
C.
are; used to
D.
have; got to
【单选题】为研究新药A治疗胃病疗效，在某医院选择40例胃病患者，随机分成实验组和对照组，实验组用药A，对照组用公认有效的药B。这种对照在实验设计中称为（ ）
A.
实验对照
B.
空白对照
C.
标准对照
D.
历史对照
【简答题】补全对话. S:I've just been to the English Corner: T: 1 Did you talk with Ben and Andy? S: 2 And I'm not sure if they understood me. T: 3 You have had a good start. S: But I'm afraid of mistakes whe...
【简答题】在重力场中均质物体的重心与物体的重力无关，只取决于物体的形状，即均质物体的重心就是其几何形体的中心，简称为__。
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