单项选择题
A.excess amount of oily-water mixtures in bilges
B.insulation of piping including exhaust pipes in engine room contaminated by oil
C.improper operation of bilge pumping arrangements
D.there were an actual emergency
单项选择题 During sea trial, the main engine well be kept run at load()
单项选择题 During the dock repair, should be measured firstly before tail shaft drawn out()
单项选择题 (),where the ship is docked for hull coating renewal, and for any other required underwater work to be carried out, when the opportunity is taken to make other repairs.