單項選擇題

Crude oil washing of cargo tanks has the following advantages except for （）

A.reducing the erosion of the cargo tanks
B.increasing the total quantity of oil to carry
C.reducing the quantity of water contained in oil
D.reducing cargo discharged time

你可能感興趣的試題

單項選擇題

Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?（）

A.discharge side of the centrifugal pump
B.suction side of the centrifugal pump
C.the lowest point of the cooling water system
D.inlet of the main engine

單項選擇題

From viewpoint of practice, it is sometimes important to detect abnormal happenings in the running gear by（）

A.a keen sense of hearing
B.rich theory
C.communicating ability with others
D.repetition work