A fire pump may be used for other purposes if（）.

After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.

A frame with two，or sometimes four，arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the（）.

Please supply 200 tons of fresh water（）my ship.

It is not necessary to declare（）in the Health List.

A fishing vessel casualty must be reported to the Coast Guard if it involves（）.

For the purposes of cargo oil containment，the fixed container under the manifold of an eight-inch loading line must hold a minimum of（）.

Permanent magnetism is found in（）.

A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.

An inert gas system on a tanker should be used to（）.