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【单选题】
塑料排水管与铸铁排水管相比，显著的特点是 ，因而安装很方便。A.
耐腐蚀性好
B.
线膨胀系数大
C.
易于粘接
D.
密度小
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反馈参考答案：
举一反三
【简答题】什么叫触头？触头有哪些主要参数？叙述其主要作用。
【单选题】Today, roller skating is easy and fun. But a long time ago, it wasn't easy at all. Before 1750, the idea of skating didn't exist. That changed because of a man named Joseph Merlin. Merlin's work was m...
A.
a strange man
B.
an unusual party
C.
how roller skating began
D.
how people enjoyed
【简答题】请列举富士五湖
【单选题】—The exam was easy, wasn't it? —Yes, but I don't think ________ could pass it.
A.
somebody
B.
anybody
C.
nobody
D.
everybody
【单选题】It isn't easy to be inspired in that spontaneous way for long periods_________.
A.
at a stretch
B.
for a stretch
C.
in a stretch
D.
on a stretch
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