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

If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.

The output volume of a positive fixed displacement pump can be changed only by （）.

A pressure drop through the refrigerant liquid line may cause （）.

The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.

Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）

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 （）.

Which of the listed pumps is NOT a positive displacement pump?（）

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

Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）