单项选择题
During working of an air compressor, （） should be drained.
A.oil sump
B.oil separator
C.outlet pipe
D.inlet pipe
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相关考题
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单项选择题
During working of an air compressor, （） should be drained.
A.inter cooler
B.cylinder
C.outlet pipe
D.inlet pipe -
单项选择题
Before starting an air compressor, It should be （）.
A.unloaded
B.primed
C.filled with water
D.greased -
单项选择题
Before starting an air compressor, It should be （）.
A.turned
B.oil level checked
C.filled with water
D.A and B
