单项选择题
A.0.02d+5mm B.0.015d+3.5mm C.0.03d+7.5mm D.0.01d+2mm
A.≥0.01d+2mm B.≥0.015d+3.5mm C.≥0.02d+5mm D.≥0.03d+7.5mm
A.过度磨损和腐蚀 B.裂纹和过度磨损 C.腐蚀和裂纹 D.套合松动
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