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【判断题】
图中所示 ， 所有接触处均为光滑接触， A 的受力分析如图所示。（）A.
正确
B.
错误
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【简答题】Dialogue 3 A: Excuse me. I’d like to check some 7) __________. B: How many bags? A: Two. B: Please show me your ticket and ID card. Do you want to stow them by fast freight or regular freight? A: What...
【简答题】8051 最多可以有 4 个并行输入输出口,最少也可以有 1 个并行口,即 P1 。 P3 常需复用作 、 、 和 。
【单选题】Man: The suitcase looks heavy. Let me give you a hand. Woman: ______
A.
Yes, please. Thank you anyway.
B.
No, thank you. That's my own business.
C.
No, thank you. I can manage by myself.
D.
No, please keep off my luggag
【简答题】8051 最多可以有 个并行输入输出口,最少也可以有 个并行口,即 口。
【单选题】听力原文： Attention passengers. The 6:50 A.M. nonstop express train from Union Station Washington to Penn Station New York is now ready for boarding. This is a two-hour forty-minute trip and the train is ...
A.
9:30.
B.
2:40.
C.
6:00.
D.
6:15.
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