Thermostatic expansion valves can be adjusted for （）.

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

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

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

When the steering gear is in operation, you should （）.

The major source of chemical contaminants in hydraulic fluid is （）.

A salinity indicator is used to determine the （）.

Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.

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

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