鉆孔機(jī)操作工考試中級鉆孔機(jī)操作工單項(xiàng)選擇題每日一練(2019.07.28)

A.625mm
B.650mm
C.675mm
D.680mm

A.2.8
B.3.5
C.4.5
D.5.5

A.降低
B.升高
C.不變
D.變稠

A.0.45
B.0.55
C.0.65
D.0.75

A.溫度高，重負(fù)荷
B.溫度高，易受潮濕
C.轉(zhuǎn)速較高
D.轉(zhuǎn)速較低