Protective clothing must be worn while sampling hazardous cargo on a tanker，and as a minimum includes（）.

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

Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of（）.

Pump out No.2 port ballast tank to（）.

Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using（）.

How must each storage tank for helicopter fuel on a ship be marked?（）

For the purpose of（）tank or hold washings from any vessel，an application shall be made to Harbor Authorities for approval.

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（）.

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.

Increasing the number of slack liquid tanks has the effect of raising the（）.