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【简答题】
在 滚切直齿圆柱齿轮的传动原理图,共有( )个传动链。
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反馈参考答案：
举一反三
【单选题】If Pat bought a tennis shirt with matching shorts, what was the cost of the shirt ？（） (1)The total cost of the shirt and shorts was $20. (2)The ratio of the cost of the shirt to the cost of the shor...
A.
条件(1)充分，但条件(2)不充分．
B.
条件(2)充分，但条件(1)不充分．
C.
条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D.
条件(1)充分，条件(2)也充分．
E.
条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
【单选题】Will this shirt ______ in the wash? I've bought several shirts which are too small for me now.
A.
shrink
B.
slim
C.
contract
D.
melt
【单选题】1 bought a shirt because it was good in quality and________in price.
A.
fashionable
B.
valuable
C.
comfortable
D.
enjoyable
【单选题】---Where did you find your wallet? --- It was in the shop _______ I bought the shirt.
A.
that
B.
which
C.
where
D.
there
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