Whenever visible traces of oil are observed on or below the surface of the water in the immediate vicinity of ship or its wake，Governments of Parties to the Convention should，to the extent they are reasonably able to do so，promptly（）the facts bearing on the issue of whether there has been a violation of the provisions of this Regulation or Regulation 10 of this Annex of MARPOL 73/78.

（）is not considered as anti-pollution equipment.

（）is not a condition for a ship of 400 tons gross tonnage and above other than an oil tanker to discharge certain amount of oil or oily mixtures into the sea.

The operator of each vessel subject to the pollution regulations is NOT required to keep written records of（）.

You are on a multiple-product chemical tanker and will carry cargoes of allyl alcohol，benzene，and propanolamine. Which of the following is true? （）

Every（）shall be fitted with a cargo tank cleaning system using crude oil washing.

Which statement is TRUE concerning the ventilation of engine and fuel tank compartments on uninspected towing vessels using fuel with a flash point of 100°F?（）

While underway and towing an unmanned tank barge you are required to（）.

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

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（）.