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【单选题】
已知αAB=245o,那么αBA=( )A.
155°
B.
65°
C.
254°
D.
335°
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文：W: I'll send Jane a new American stamp. M: I'm sure she'd be pleased to get it. She has a collection of stamps from foreign counties. What do we learn about Jane?
A.
She's going to America.
B.
She has travelled abroad.
C.
She likes collecting stamps.
【单选题】听力原文：Would it be better if I returned later this afternoon? (A) Yes, I'm sure we can. (B) Yes, it probably would. (C) It's better than I thought it was. (14)
A.
B.
C.
【简答题】固紧材料的选用要考虑什么因素?
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