單項(xiàng)選擇題In which of the areas listed would you expect to find the highest salt concentration in a flash evaporator?()

A.Distiller air ejector cooling medium
B.Saltwater heater discharge
C.First-stage internal feed box
D.Second-stage internal feed box


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the ().

A.condenser
B.vapor generator
C.accumulator
D.evaporator

2.單項(xiàng)選擇題The low pressure side of a refrigeration system is considered to exist from the ().

A.expansion valve to the compressor
B.receiver to the expansion coil
C.expansion valve to the evaporator
D.condenser to the expansion valve

3.單項(xiàng)選擇題If the electric motor driving an air compressor fails to start, the cause may be a ().

A.leaking unloader
B.tripped circuit breaker
C.control line leak
D.defective pop valve

4.單項(xiàng)選擇題The refrigerant gas returning to the compressor should be ().

A.superheated
B.saturated
C.dense
D.flooded

5.單項(xiàng)選擇題The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by ().

A.a separate air ejector unit
B.a direct unimpeded connection between second stage and salt water feed heater
C.either by vacuum drag or an external line from the first stage via a fixed orifice
D.the fixed orifice provided in the steam supply line

最新試題

A salinity indicator is used to determine the ().

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

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?()

題型:?jiǎn)雾?xiàng)選擇題

A grease gun is generally used to lubricate a ().

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().

題型:?jiǎn)雾?xiàng)選擇題