单选题The most serious effect of air trapped in a diesel engine jacket water cooling system is that it（）.Acauses colloid suspension in the cooling waterBreduces the capability of the lubrication systemCcan form pockets which block the flow of coolant through the systemDleads to the scuffing of cylinder walls
单选题
The most serious effect of air trapped in a diesel engine jacket water cooling system is that it（）.
A
causes colloid suspension in the cooling water
B
reduces the capability of the lubrication system
C
can form pockets which block the flow of coolant through the system
D
leads to the scuffing of cylinder walls
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