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【判断题】
表面粗糙度对耐磨性影响的特点是:粗糙度值越小,耐磨性越好。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。 It's nine o'clock in the evening. The family are at home. Jim's father is sitting in a chair. He's watching TV. His mother is standing near the window. She's giving some food to Polly. Polly say...
【单选题】–Mr. Smith is no longer ________he used to be. --So he is. Success and wealth have _________ his character.
A.
what; trained
B.
who; transferred
C.
what; transformed
D.
who; transformed
【单选题】When he came back after graduation, he found his hometown completely ______.
A.
changed
B.
changing
C.
to change
D.
to be changed
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