An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.

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

A salinity indicator is used to determine the （）.

The general purpose of a heat exchanger is to （）.

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 rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.

The rate of heat transfer from a hot region to a cold region is affected most by the （）.

The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.

An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.