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單項(xiàng)選擇題

Since the engine doesn’t work well, you’d better （） as soon as possible.

A.reduce its speed
B.find out its trouble
C.eliminate its trouble
D.all the above

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（）, so they are widely used on board ship nowadays.

A.Diesel engines have more advantages in comparison with gasoline engines
B.Diesel engines have more advantages in comparison to gasoline engines
C.Gasoline engines have more advantages in comparison with diesel engines
D.Gasoline engines have more advantages in comparison to diesel engines

單項(xiàng)選擇題

The quality of the fuel oil and lube oil （）, Im afraid.

A.has much to do with the operation of the engine and its life
B.have much to do with the operation of the engine and its life
C.has much doing with the operation of the engine and its life
D.have much doing with the operation of the engine and its life