检查门止挡是否有裂纹和腐蚀( )
A.Examine the doorstop fittings for cracks and corrosion. B.Examine the doorstop fittings for dent and corrosion. C.Examine the doorstop fittings for cracks and nick.正确答案A
检查门止挡是否有裂纹和腐蚀( )
A.Examine the doorstop fittings for cracks and corrosion. B.Examine the doorstop fittings for dent and corrosion. C.Examine the doorstop fittings for cracks and nick.正确答案A