單項選擇題

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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單項選擇題

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

A.to a great extent
B.on a great extent
C.on mainly
D.on only

單項選擇題

The selection of a lubricating oil depends to a great extent on the operating conditions,（）.

A.the type of coolant
B.the design of the engine
C.the type of fuel to be burned
D.B and C

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