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【简答题】
通过游泳使机体散热的方式属于( )。
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反馈参考答案：
举一反三
【简答题】生产性粉尘的理化特性包括() A化学组成 B分散度 C溶解度 D形状与硬度 E荷电性F爆炸性
【简答题】下列微分或差分方程所描述的系统，是线性的还是非线性的?是时变还是时不变的?
【简答题】He tried (hard, hardly) but failed to finish his work in time.
【单选题】He had hardly had time to finish the sound-recording ______ he turned off the radio.
A.
when
B.
than
C.
until
D.
as
【单选题】Hardly ______ his speech ______ the audience started cheering.
A.
did he finish; than
B.
does he finish; before
C.
has he finished; while
D.
had he finished; when
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