The officer responsible for the sanitary condition of the engineering department is the （）.

单项选择题The max effluent of the oil content from a ship of 400 tons gross tonnage and above other than an oil tanker is（）.

A.less than 100 parts per million
B.more than 100 parts per million
C.at least 100 parts per million
D.100 parts per million

单项选择题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

单项选择题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

单项选择题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

单项选择题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