單項選擇題

Which of the following statements is true concerning an oil cooler?（）

A.The oil temperature is less than the cooling water temperature
B.The oil pressure is less than the cooling water pressure
C.The oil pressure is greater than the cooling water pressure
D.The oil flow control valve is always installed in the oil input line

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單項選擇題

One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.

A.casting interlocking components
B.welding plates to form sections for assembly
C.forging integral components
D.case hardening integral components

單項選擇題

Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.

A.check and regulate the water level
B.close the air cock once fires are lit
C.blowdown the gage glass
D.crack the steam stop to assure protective steam flow

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Which of the following statements is true concerning an oil cooler?（）

你可能感興趣的試題

One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.

Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.

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