單項(xiàng)選擇題Fuel pump index is （）.
A.the viscosity index
B.the fuel oil contents
C.the starting speed
D.the reading at the rack
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1.單項(xiàng)選擇題Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
A.have nothing to do with
B.having nothing to do with
C.have much to do with
D.having much to do with
2.單項(xiàng)選擇題Fuel oil is pumped by means of （） from the bunker tanks.
A.a transfer pump
B.a bilge pump
C.a service pump
D.a vacuum pump
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