单选题Setting a sealing equipment astern on the tailshaft can’t （）Aprevent the seawater from intergratingBprevent the lube oil from running out of the outside aboardCstrengthen the intencity of the sterntubeDprevent the mud and sand from entering the lube oil system
单选题
Setting a sealing equipment astern on the tailshaft can’t （）
A
prevent the seawater from intergrating
B
prevent the lube oil from running out of the outside aboard
C
strengthen the intencity of the sterntube
D
prevent the mud and sand from entering the lube oil system
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