A.changing the air filter
B.recharging the system
C.changing compressor lubricant
D.renewing container vacuum
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A.filers
B.separators
C.ducted traps
D.dehumidifiers
A.low relative humidity is maintained
B.triple banded squirrel cage fans are used
C.air circulation is a maximum
D.high relative humidity is maintained
A.admit only enough fresh outside air to provide proper ventilation
B.reduce the air reheating system load
C.lower the compressor head pressure
D.operate the purge recovery unit continuously
A.suction service valve as a vapor
B.suction service valve as a liquid
C.discharge service valve as a vapor
D.charging valve as a liquid
A.Air or Nitrogen
B.Seawater or Fresh water
C.Sodium Nitrate brine
D.Calcium Sulfate brine
最新試題
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The cetane rating of diesel fuel is an indication of the （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The condensers located in various stages of a flash evaporator are cooled by（）
The main purpose of port State control is not to（）
（） is not installed on the main switchboar.
Cold weather starting of a diesel engine may be made easier by（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.