Litmus paste is used in order to determine（）.

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

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

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（）.

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

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.

Before you start an engine in a compartment，it’s MOST important to（）.

If the Certificate of Inspection of a damaged tank barge has expired，which certificate may be issued to allow its movement to a repair facility? （）

Air compressors are NOT permitted in which space(s) on a tank barge carrying grade A cargo?（）

During oil transfer operations，who is responsible for ensuring that the posted transfer procedures are followed?（）.