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單項(xiàng)選擇題

The sequence of parts in a generally used fuel oil supply system for a main engine is （）
(1)tanks in the double bottom
(2)centrifuges
(3)service tank
(4)settling tank
(5)viscosity regulator

A.(1)-(2)-(4)-(3)-(5)
B.(1)-(4)-(2)-(3)-(5)
C.(1)-(3)-(2)-(4)-(5)
D.(1)-(5)-(4)-(2)-(3)

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單項(xiàng)選擇題

The sequence of fuel injection into cylinders is determined by （）.

A.the steering
B.the driven gear
C.the turning gear
D.the timing gear

單項(xiàng)選擇題

The selection of an oil from the （） depends to a great extent on the operating conditions, the design of the engine and the type of fuel to be burned.

A.commercially available
B.commercially
C.commercial available
D.commerce available

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