起货设备中卷筒出现下列情况（）时应报废

A.10

B.15

C.20

D.25

A.裂纹或轮缘破损

B.卷简壁磨损量达原臂厚的1%

C.卷筒壁磨损量达原臂厚的5%

D.卷筒壁磨损量达原臂厚的8%

E.卷筒壁磨损量达原臂厚的10%

A.10%

B.30%

C.20%

D.5%

A.5%

B.10%

C.15%

D.20%

A.轮槽不均匀磨损达1mm

B.轮槽不均匀磨损达3mm

C.轮槽壁厚磨损达原壁厚的5％

D.轮槽壁厚磨损达原壁厚的15％

A.10%

B.15％

C.20%

D.30％

A.7%

B.10%

C.15%

D.20%

A.10%

B.20%

C.30%