单项选择题
A.160~180B.110~125C.140~160D.40~60
A.352226X2-2RZ型轴承B.SKF197726型轴承C.353130A型轴承D.353130B型轴承
A.1B.2C.3D.5
A.0.3-0.7B.0.7-1.1C.0.8-1.0D.0.8-1.1
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