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【单选题】
下列关于功率的说法中，正确的是（ ）A.
用的力越大，做功时间越短，功率越大．
B.
做功越多，做功时间越短，功率越大
C.
做功时间越长，功率越大
D.
做功时间越短，功率越大
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反馈参考答案：
举一反三
【单选题】“ __________ were you born?” “On May 12, 1985”. [ ]
A.
What
B.
Which
C.
When
D.
where
【单选题】—When were you born? ． —I was born ________the morning of May 7th，1995．
A.
in
B.
on
C.
at
D.
during
【简答题】醚按与氧相连的两个烃基是否相同,可分为 、 ;醚的沸点比相应的醇 。
【单选题】—When were you born? —____________.
A.
On March nineth
B.
In May 5
C.
On February fifteenth
【单选题】一When were you born? 一I was born ____ the morning of May 7, 1995. [ ]
A.
in
B.
on
C.
at
D.
of
参考解析：
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