卸儲(chǔ)煤設(shè)備檢修單項(xiàng)選擇題每日一練(2019.01.16)

A.疲勞點(diǎn)蝕
B.磨損
C.膠合
D.折斷

A.5%
B.10%
C.15%
D.20%

A.10mm
B.5mm
C.3mm
D.2mm

A.n₁＝n₂
B.n₁＞n₂
C.n₁＜n₂
D.無(wú)法確定

A.小于0.5mm
B.小于1mm
C.1～2mm
D.可以大于2mm