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【单选题】
( )机构用于受力较大且滑动行程较小的剪床等机械设备中。A.
偏心轮
B.
C.
曲柄滑块
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反馈参考答案：
举一反三
【单选题】Only by keeping down costs will American maintain its competitive______ over other countries
A.
interest
B.
favour
C.
advantage
D.
profit
【简答题】找找你身上、身边景物的黄金比,写一篇小文章。
【单选题】Only by keeping down costs will America maintain its ________ advantage over other countries.
A.
compete
B.
competitive
C.
competitior
D.
competition
【单选题】Only by keeping down costs will America maintain its ______ advantage over other countries.
A.
objective
B.
competitive
C.
alternative
D.
respective
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