单选题Oil pressure in the lubrication system is（）than the static sea water head to ensure that sea water cannot enter the sterntube in the event of seal failure.AhigherBlowerCvery higherDvery lower
单选题
Oil pressure in the lubrication system is（）than the static sea water head to ensure that sea water cannot enter the sterntube in the event of seal failure.
A
higher
B
lower
C
very higher
D
very lower
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