單項(xiàng)選擇題Sufficient cargo tanks shall be（）prior to each ballast voyage in order that，taking into account the tanker’s trading pattern and expected weather conditions，ballast water is put only into cargo tanks which have been crude oil washed.

A.Inerted
B.Crude oil washed
C.Gas freed
D.Battened down


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1.單項(xiàng)選擇題No person on board any vessel to which Annex V to MARPOL 73/78 applies may discharge garbage of any type when（）.

A.less than 12 nautical miles from PRC
B.less than 12 nautical miles from nearest land
C.in the navigable waters of the PRC
D.less than 25 nautical miles from nearest land

2.單項(xiàng)選擇題In which case is the IOPP Certificate of an inspected vessel NOT invalidated（）.

A.The required oily-water separator malfunctions
B.The ship is transferred to Liberian registry
C.An annual survey is conducted fifteen months after the date of certificate issuance
D.A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator

3.單項(xiàng)選擇題Every（）shall be fitted with a cargo tank cleaning system using crude oil washing.

A.existing crude oil tanker of 20000 tons deadweight and under
B.new crude oil tanker of 20000 tons deadweight and under
C.existing crude oil tanker of 20000 tons deadweight and above
D.new crude oil tanker of 20000 tons deadweight and above

4.單項(xiàng)選擇題Every new crude oil tanker of 20000 tons deadweight and above and every new product carrier of 30000 tons deadweight and above shall be provided with（）.

A.segregated ballast tanks
B.moulded draught measurement system
C.additional ballast water system
D.dedicated clean ballast tanks system

5.單項(xiàng)選擇題According to Annex V to MARPOL 73/78，garbage containing plastic is permitted to be disposed of by（）.

A.Incinerating offshore
B.Discharging when at least 12 nautical miles from nearest land
C.Grinding to less than 1 and discharging at least 12 nautical miles from nearest land
D.Grinding to less than 1 and discharging at least 25 nautical miles from nearest land