單項選擇題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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1.單項選擇題During working of an air compressor, () should be drained.

A.inter cooler
B.cylinder
C.outlet pipe
D.inlet pipe

2.單項選擇題Before starting an air compressor, It should be ().

A.unloaded
B.primed
C.filled with water
D.greased

3.單項選擇題Before starting an air compressor, It should be ().

A.turned
B.oil level checked
C.filled with water
D.A and B

4.單項選擇題The air compressor pumps air to the().

A.engine cylinder
B.air bottle
C.evaporator
D.condenser

5.單項選擇題The air compressor pumps air to the ().

A.expansion tank
B.combustion chamber
C.air receiver
D.evaporator