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【多选题】
活塞气缸组密封不良的原因有哪些?A.
活塞与气缸壁间隙过大
B.
气门间隙过大
C.
活塞环“三隙”过大、卡滞
D.
气缸壁拉缸
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【简答题】听短文，选择正确的答案。 1. How old is Michael? [ ] A. four B. fif C. six 2. Where is he from? [ ] A. America B. China C. England 3. Does he think he is a good student? [ ] A. No, he doesn...
【简答题】梅罗维茨的媒介情境论阐述于 年出版的 。
【简答题】请从Ⅱ栏中选出Ⅰ栏中各句的最佳应答语。 Ⅰ Ⅱ ( )1. Where is he from? ( )2. Who is he? ( )3. What grade are you in? ( )4. Are you Mr. Li? ( )5. Whose dress is that? A. No. I'm Mr. Wang. B. It's my siste...
【简答题】(the followings are from 长篇阅读) Who is the author of the ariticle? Where is he from?
【单选题】听力原文：Jane，this is my friend，Tom． (4)
A.
Where is he from?
B.
My pleasure．
C.
Glad to meet you．
D.
Thank you．
【简答题】Do you know him? Where is he from?
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