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【单选题】
采用自动补偿封闭式散热器结构的目的是为了( )。A.
防止高温蒸汽喷出伤人
B.
降低冷却液的损失
C.
加强散热
D.
提高冷却液沸点
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反馈参考答案：
举一反三
【单选题】The brave man died, ________ his young wife nothing but a________ cottage. A. B. C. D.
A.
left; breaking
B.
leaving; broken
C.
left; broken
D.
to leave; breaking
【单选题】. ______ miracle of the box office, “Avatar” brings back the peace and innocence to the heart of audience.
A.
Calling
B.
To be called
C.
Having called
D.
Called
【简答题】泵与风机是将原动机的（ ）能转换成流体的压力能和动能的一种动力设备。A. 机械
【简答题】泵与风机属通用的流体机械,它是将原动机的( )的机械。
【单选题】The postmaster promised ______.
A.
to make another post-office box for the author
B.
to let the author have a post-office box
C.
to include the author's name on the list
D.
to deliver the author's mail to his home
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