To（）sanitary water from any vessel，an

1、Water fog from an all-purpose nozzle m

Water fog from an all-purpose nozzle may be used to（）.Afight an electrical fireBfight a magnesium fireCeliminate smoke from a compartmentDAll of the above

2、They were asked to avoid（）any water wh

They were asked to avoid（）any water which had not been boiled.AdrinkingBnot to be drunkCto drinkDhaving

3、Prior to a ship’s departure from any p

Prior to a ship’s departure from any port （） should be tested with deck officer to ensure satisfactory operation.Afire fighting pumpBthe steering gearClife boat engineDthe main engine

4、When a vessel is in any doubt as to wh

When a vessel is in any doubt as to whether such a situation exists she shall（）that it does exist and act accordingly.AconsumeBassumeCperfumeDresume

5、When（）clean ballast water from any ves

When（）clean ballast water from any vessel，an application shall be made to Harbor Authorities for approval.AdischargingBrecirclingCloadingDtaking i

6、Prior to boarding from a vessel，a davi

Prior to boarding from a vessel，a davit-launched liferaft should be well ventilated of excess（）.Ahydrocarbon gasBcarbon monoxide gasCcarbon dioxide gasDfreon ga