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【单选题】
离合器上安装扭转减振器是为了防止A.
曲轴共振
B.
传动系共振
C.
离合器共振
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【简答题】n. 评论;解释;批评;指责; v. 表达意见;作出评论;
【简答题】The smooth space flight, experts say, marks a big ____________ for Chinese scientists.
【单选题】The smooth space flight, experts say, marks a big ____________ for Chinese scientists.
A.
creative
B.
breakthrough
【简答题】Looking back on China's road to outer space, people can easily find it has not been very smooth．In the past years, Chinese people have made hard and determined efforts to realize the dream their ances...
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