If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.

A salinity indicator is used to determine the （）.

The usual symptoms of cavitation in a centrifugal pump is （）.

If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.

Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.

A salinity indicator is used to determine the （）.

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.

When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.

If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.

Low compressor head pressure in a refrigeration system can be caused by（）.