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

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

A salinity indicator is used to determine the （）.

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

The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）

On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.

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

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

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

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 （）.