根据某建设工程的有关数据（见下表），可知该项目的静态投资回收期为（）年。Ａ３.４ Ｂ４.８Ｃ３.８ Ｄ

If you must pump bilges while a vessel is in port，you should pump only ______．

A.If discharge is led to a shore tank or barge

B.During the hours of darkness

C.On the outgoing tide

D.As much as is necessary

A.Pump only if the discharge is led to a shore tank or barge

B.Pump only during the hours of darkness

C.Pump only on the outgoing tide

D.Pump only as much as is necessary

Waste oil from the lube oil sumps of machinery may NOT be ______.

A.drained into the vessel's bilges

B.reclaimed（回收的） for other uses

C.held in a slop tank

D.purified and then reused

An independent bilge suction is required for _____.

A.ballast tanks

B.sludge tanks

C.machinery space bilges

D.cargo hold bilges

A、more outgoing

B、very outgoing

C、the most outgoing

D、most outgoing

A.Cargo tank ballast

B.Segregated ballast

C.Engine room bilges

D.Cargo pump room bilges

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.paint peeling off the uptake

A.cool the bulkheads around the fire

B.remove combustibles from direct exposure

C.close all openings to the area

D.shut off all electric power

A.varying the pump discharge pressure

B.varying the pump return pressure

C.rotation of the pump plunger

D.rotation of the pump barrel

A.the master

B.the chief engineer

C.the officer on duty

D.the engineer in charge of watch