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【单选题】
齿轮传动效率比较高，一般圆柱齿轮传动效率可达 %。A.
a：50
B.
b：90
C.
c：98
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举一反三
【单选题】W: Look at this pink watch. It looks great, doesn't it? And it's only $ M:________
A.
It's only twenty dollars. God knows it.
B.
I don't want to look at it. After all, it's a watch.
C.
The price is good．But I want to buy a more expensive watch.
D.
How is it possible that a watch only cost us ＄ 20?
【多选题】一般认为，企业集团财务管理体制按其集权化的程度包括有（）等类型。
A.
集权式财务管理体制
B.
分权式财务管理体制
C.
统一式财务管理体制
D.
合一式财务管理体制
E.
混合制式财务管理体制
【简答题】将当前正在编辑的 Word 文档以文本格式存盘,应选择 “ 文件 ” → “ ” 命令。
【单选题】This toy Mickey Mouse _______be Amy's. she's the only kid at the picnic.
A.
must
B.
can
C.
need
D.
can't
【单选题】Sir, you _______ be sitting in this waiting room. It's for women and children only. [ ]
A.
oughtn't to
B.
can't
C.
won't
D.
needn't
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