单项选择题
A.1150~1250r/min B.1250~1350r/min C.1120-1150r/min
A.2~4万km B.3~5万km C.4~6万km
A.0.93MQ B.0.63MQ C.0.83MQ
A.l.l~1.5mm B.1.2~1.6mm C.1.3~1.7mm
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