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【单选题】
齿轮泵主、从动齿轮的不平衡径向力()。A.
主动齿轮大，从动齿轮小
B.
主动齿轮小，从动齿轮大
C.
主、从动齿轮大小相等
D.
都有可能
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举一反三
【单选题】My uncle’s house in the downtown area is much smaller than ours, but it is twice ____ expensive.
A.
as
B.
so
C.
too
D.
very
【单选题】My uncle’s house in the downtown area is a bit smaller than that in the countryside, but it is twice _________ expensive.
A.
as
B.
too
C.
rather
D.
very
参考解析：
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