题目内容

跳体育舞蹈可令心跳每分钟由80次升到多少次?()

A. 90
B. 100
C. 110
D. 120

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Precision engine bearing inserts are manufactured with a small portion of the bearing ends extending beyond the bearing housing or capsThe installation process of these bearings requires sufficient ().

A. overlap
B. crush
C. lap or lead
D. protrusio

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