单项选择题

根据《汽车发动机汽缸体与汽缸盖修理技术条件》（GB 3801一83）的技术要求,汽缸套上端面应不低于汽缸体上平面,亦不高出（）mm

A.0.10
B．0.075
C．0.05
D．0

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单项选择题

用质量为0.25Kg锤子沿曲轴轴向轻轻敲击连杆,连杆能沿轴向移动,且连杆大头两端与曲柄的间隙为（）mm

A.0.17~0.35
B．0.35~0.52
C．0.52~0.69
D．0.69~0