A.a drop of oilB.the emulsion of oil at sea surfaceC.th……

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No discharge into the sea shall contain（）in quantities or concentrations which are hazardous to the marine environment or chemicals or other substances introduced for the purpose of circumventing the conditions of discharge specified in MARPOL 73 78.

A.chemicals
B.chemicals or other substances
C.substances
D.other substances

单项选择题In case of a ship of less than 400 tons gross tonnage other than an oil tanker whist outside the（），the Administration shall ensure that it is equipped as far as practicable and reasonable with installations to ensure the storage of oil residues with the requirements of MARPOL 73 78.

A.special area
B.national waters
C.the designated zone
D.the designated channels

单项选择题If Annex V to MARPOL 73 78 applies to your vessel，you willnot be able to discharge（）anywhere at sea.

A.plastic
B.metal
C.glass
D.paper

单项选择题How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?（）.

A.With gooseneck vents
B.With warning signs
C.With flame screens
D.With pressure-vacuum relief valves