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【单选题】
听力原文：M: Hello, will you please send someone up to my apartment. The hot water is running, and I can't turn it off. W: There's no one in the office right now. I'll send someone up as soon as I can. Q: Why did the man want someone to come up to his apartment? (16)A.
He needed an electrician.
B.
The water was running.
C.
He had no hot water.
D.
There was no heat.
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举一反三
【简答题】是将空心工序件或管状毛坯沿径向往外扩张的冲压工序A. 空心坯料胀形
【单选题】膀胱三角的标志为
A.
输尿管间襞与膀胱尖之间
B.
尿道内口与膀胱底之间
C.
尿道内口与两输尿管口之间
D.
尿道内口周围的三角形区域
E.
输尿管口与膀胱尖之间区域
【简答题】（）是将空心工序件或管状毛坯沿径向往外扩张的冲压工序。
【单选题】In the second paragraph，theword“collectively”means__________．
A.
hesitatingly
B.
unknowingly
C.
weakly
D.
commonly