A、A.reduce the wear of bearing surfaces
B、B.cool the bearing surfaces
C、C.assist in sealing bearing surfaces
D、D.all of the above
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A、filter to remove the fuel oil B、use the settler to remove the fuel oil C、remove the fuel oil by centrifuging D、drain and then renew the lube oil supply
A、dropping lube oil for lubrication, reducing the pollution to the sea B、setting a temporary gravity oil tank and enhanced the position properly C、lubricating with the used lube oil D、lubricating with the fresh water and navigation in a lower speed
A、A.metal particles loosened by wear B、B.air when no air cleaners are used C、C.condensation of water vapors D、D.breakdown of the lubricating oil by dilution
A、A.bunker fuel for use aboard ship B、B.lubricating oil for use aboard ship C、C.coconut oil carried in tank vessels D、D.oily water from a ships bilges
A、must be centrifuged B、must by filtered C、must be changed D、is holding finely dispersed carbon in suspension
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