Notwithstanding the provisions of this Regulation，the segregated ballast conditions for oil tankers less than 150 meters in length shall be to the（）of the Administration.

Any oil tanker which is not required to be provided with segregated ballast tanks in accordance with this paragraph may，however，be qualified as a segregated ballast tanker （）it complies with the other requirements of paragraphs of this Convention.

Every existing product carriers of 40000 tons deadweight and above shall be provided with segregated ballast tanks and shall comply with the specified requirements，or，alternatively，operate with（）in accordance with the convention.

After an IOPP Certificate is issued to an inspected vessel，how many other surveys of the vessel’s pollution prevention equipment are conducted during the period of validity of the certificate?（）

On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.

In which case is the IOPP Certificate of an inspected vessel NOT invalidated? （）

Gasoline fuel tank vents should terminate（）.

On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.

Functions aboard a tanker or tank barge such as connecting，disconnecting，and topping off must be supervised by（）.

Of the following，the most important consideration for a tanker is（）.