單項(xiàng)選擇題

The air compressor pumps air to the（）.

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

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單項(xiàng)選擇題

The air compressor pumps air to the （）.

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

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