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【单选题】
抗冲击能力较差的轴承是 。A.
整体式滑动轴承
B.
部分式滑动轴承
C.
向心球轴承
D.
螺旋滚子轴承
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举一反三
【简答题】What is NOT true about the scramjet engine?
【单选题】According to this advertisement, what is true about delivery?
A.
The customer doesn' t have to pay for the delivery if they buy before Sunday.
B.
Rico' s World of Sofa' s pays 10% of delivery fee for the customers.
C.
Delivery is always free.
D.
Only someone who purchases over $ 1,000, gets free delivery.
【简答题】听力原文：What is true about family lifestyle. patterns now? What is true about family lifestyle. patterns now? There is much more variety in ______ now than there was before.
【单选题】What is TRUE about the words?
A.
They are spoken or written sounds.
B.
They can't be written down.
C.
They are used to express feeling only.
D.
They are soundless signs.
【单选题】What is TRUE about the words?
A.
They are used to express feeling only.
B.
They can't be written down.
C.
They are spoken or written sounds.
D.
They are soundless signs.
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