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【简答题】
某一块状材料,完全干燥时的质量为120g,自然状态下的体积为50cm3,绝对密实状态下的体积为30cm3; (1)试计算其密度、密度和孔隙率。 (2)若体积受到压缩,其密度为3.0g/cm3,其孔隙率减少多少?
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【简答题】缺词填空。 Peter is my good friend. He is very (1)g . He is willing to (2)s his things with us. He is one of the (3)n boys in my class. What's he (4)l . He's friendly and helpful. He's (5)r to help us any ...
【单选题】按照数量统计原理预先设计的抽样方案,从待检产品中取得一些随机样本,逐一实施检验,并按照相应标准判断对总体质量是否接受,其称为
A.
全数检验
B.
抽样检验
C.
加严检验
D.
正常检验
【简答题】请听下面10段对话。每段对话有一小题，从题中所给的ABC三个选项中选出最佳答案。 1. What has Peter bought? A. Vegetables. B. Milk. C. Fruit. 2. What does Frank like to watch? A. Fashion shoe. B. Beijing Opera. C. Football match. 3. How did ...
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【简答题】任务型阅读。 请阅读以下人员的相关信息，然后匹配和他/她感兴趣的广告。 1 . Meimei is interested in playing the violin, but she can't play very well because she has no music teacher to teach her face to face. She really wants to get one...
【判断题】Peter has no time to study because he is crazy about playing video games.
A.
正确
B.
错误
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