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單項(xiàng)選擇題

Vents are led from the engine to the head tank for the release of （） from the cooling water.

A.air
B.heat
C.sludge
D.steam

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單項(xiàng)選擇題

Vents are led from the engine to head tank （） from the cooling water.

A.for the release of air
B.for the release of water
C.in order to the release of air
D.because the release of air

單項(xiàng)選擇題

Vee-type engines have the connecting rods from two cylinders connected to each （） of the crankshaft.

A.throw
B.web
C.main bearing
D.deflection

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