Each fireman’s outfit and its spare equipment on a tanker must be stowed in a(n)（）.

In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.

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

Oil may NOT be transferred unless（）.

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

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

Individual wires，used in systems greater than 50 volts,（）.

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

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（）.

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