The thermal expansion valve responds to the（）
A、amount of superheat in the vapor leaving the coil
B、amount of superheat in the liquid
C、temperature in the evaporator coils
D、pressure in the evaporator coils
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The demisters installed in a flash-type evaporator serve to （）
A、deaerate the first effect distillate
B、filter the condensed flash vapors
C、deaerate the first and second effect distillate
D、remove small water droplets entrained in the flashed vapor
In an operating refrigeration system low on refrigerant, a liquid line sight glass will（）
A、be clear
B、be blue
C、be light green
D、show bubbles
The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the （）.
A、bridge control panel
B、disconnect links
C、governor relay box
D、main switchboard
The SOLAS convention prescribes that the emergency steering drill should be carried out one time every （） months.
A、4
B、3
C、2
D、1
In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by（）
A、opening more bypass lines
B、opening additional expansion valves
C、adding refrigerant
D、speeding up the machine
