海船船员考试
单选题Air line lubricators are used in compressed air systems to lubricate （）.A the suction and discharge valvesB tools and equipment served by compressed airC air line reducing valvesD all of the above
题目
the suction and discharge valves
tools and equipment served by compressed air
air line reducing valves
all of the above
相似问题和答案
第1题：
What is the function of an air receiver in the compressed air system on a ship?
A.Condenses moisture
B.Provides overpressure protection
C.Purifies the air
D.Acts as an accumulator
第2题：
A technician is tasked with clearing all dust covering the fan vents of servers in a small office.Which of the following tools would be the BEST option?（）
- A、Small vacuum
- B、Air compressor
- C、Compressed air can
- D、Paint brush
正确答案:A
第3题：
The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
第4题：
high pressure fluid accumulators
driving air-powered plunger pumps
filling open-circuit breathing systems
bladder-type accumulators
第5题：
Protects against suction valve float
Provides a positive pressure on the air inlet valves
Prevents lubricating oil contamination of the compressed air supply
Protects against the damaging effects of airborne solid particles
第6题：
Which cleaning product should be used for the inside of a computer？（）
- A、glass cleaner
- B、a simple ammonia and water solution followed by an antistatic solution
- C、a bleach solution followed by water
- D、compressed air
正确答案:D
第7题：
the cylinder head
the cross-head
the moving piston
the stationary piston
第8题：
Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.
A.moisture in the compressed air supply
B.excessive dryness in the compressed air supply
C.pressure surging in the compressed air receiver
D.insufficient lubrication of the system components
第9题：
Condenses moisture
Provides overpressure protection
Purifies the air
Acts as an accumulator
第10题：
increase the density of the cylinder air charge
prevent turbocharger overheating
liminate the need for a pre-cooler
remove moisture from air compressed by the turbocharger