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

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


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1.單項(xiàng)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

2.單項(xiàng)選擇題The air compressor pumps air to the().

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

3.單項(xiàng)選擇題The air compressor pumps air to the ().

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

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

A.air cylinder
B.combustion chamber
C.steam drum
D.expansion tank

5.單項(xiàng)選擇題The () stage air compressors are widely used on board the ship.

A.single
B.Ⅱ
C.Ⅲ
D.multiple