單項選擇題

Why the cooling water of the diesel engine should be treated? Because the（）

A.Cooling water is alkalescence
B.cooling water is acidity
C.cooling water has salinity
D.cooling water has impurity

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單項選擇題

The cooling water of the diesel engine should be treated, because it has（）

A.alkale scence
B.acidity
C.salinity
D.impurity

單項選擇題

When received the order "finished with engine" which of the following operations is wrong?（）

A.stop the LO pump, SW pump, FW pump
B.stop the priming FO transfer pump
C.engage the turning gear
D.open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover

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Why the cooling water of the diesel engine should be treated? Because the（）

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The cooling water of the diesel engine should be treated, because it has（）

When received the order "finished with engine" which of the following operations is wrong?（）