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【简答题】
是利用阀前后介质的压力差而自动启闭,控制介质单向 流动的阀门。
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反馈参考答案：
举一反三
【单选题】it is to go swimming on sueh a hot day!
A.
． What fun
B.
． How fun
C.
． What a fun
D.
． How a fun
【简答题】He wanted me to go swimming with him. →I ______ to go swimming with him.
【简答题】We go swimming twice a week．（对划线部分提问） ________ ________ ________ ________go swimming?
【单选题】What does the woman mean?
A.
She will not go swimming with the man.
B.
She will go swimming with the man.
C.
She doesn't like swimming.
【单选题】They would rather __________ than stay at home. A. go swim B. to go swimming C. go swimming D. to go swim
A.
go swim
B.
to go swimming
C.
go swimming
D.
to go swim
【单选题】Lucy, how about _________ this afternoon? [ ]
A.
go swimming
B.
going swim
C.
to go swimming
D.
going swimming
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