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【单选题】
哪种动车组同一转向架上有四根抗蛇形减振器？A.
CRH1
B.
CRH2
C.
CRH3
D.
CRH5
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举一反三
【简答题】What do people do in their free time? Some people like to stay at h 1 . Some would like to go for a picnic. 2 (其他的)like to do sports. My friend Bruce works hard in an office 3 Monday to Friday. On wee...
【单选题】Why does the man have a lot of stress?
A.
He couldn' t work out at the gym recently.
B.
His things have gone wrong.
C.
His boss hates him.
D.
His car has broken down.
【简答题】感受直线变速运动的感受器是 和 ,感受旋转变速运动的感受器是 _________ 。
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