A.anemometer
B.potentiometer
C.manometer
D.psychrometer
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A.opening more bypass lines
B.opening additional expansion valves
C.adding refrigerant
D.speeding up the machine
A.manifold
B.condenser
C.chamber
D.plenum
A.defective thermal bulb
B.clogged scale trap
C.stuck high-pressure switch
D.stuck low-pressure switch
A.insufficient refrigeration
B.leaky suction valves
C.expansion valve stuck open
D.suction valve not adjusted properly
A.too much cooling water going through the condenser
B.not enough refrigerant in the system
C.a leak in the evaporator coils
D.no enough cooling water going through the condenser
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The main purpose of port State control is not to（）
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.
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The shipboard oil pollution emergency plan will be invalid after （）
To proceed to the assistance of a ship in distress is（）
If separating effect is not good, which measure should be taken （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（） is not installed on the main switchboar.
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.