网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Air compressor receivers should be “blown down” at least （）.
A
yearly
B
quarterly
C
monthly
D
daily
参考答案
参考解析
解析：
暂无解析
更多 “单选题Air compressor receivers should be “blown down” at least （）.A yearlyB quarterlyC monthlyD daily” 相关考题
考题
When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should ______.A.secure all ventilationB.shut down the exhaust blowersC.shut down the intake blowersD.ventilate the cargo holds
考题
Diesel engines obtain combustion air through turbo chargers，blowers，or ______．A.Air startersB.CarburetorsC.Natural aspirationD.Air receivers
考题
Advection fog is most commonly caused by ______.A.air being warmed above the dew pointB.saturation of cold air by rainC.a rapid cooling of the air near the surface of the Earth at nightD.warm moist air being blown over a colder surface
考题
单选题Air blowing from the intake air filter of an operating air compressor indicates （）.A
broken inlet valvesB
broken discharge valvesC
pulsations in the air distribution systemD
overloading of the air distribution system
考题
单选题During working of an air compressor, （） should be drained.A
oil sumpB
oil separatorC
outlet pipeD
inlet pipe
考题
单选题On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.A
charge air receiverB
scavenging air beltC
turbineD
air cooler
考题
单选题Condensate must be drained periodically from the air compressor receivers to prevent （）.A
second stage cylinder lockupB
oil sump contaminationC
faulty operation of pneumatic valvesD
corrosion of air receiver baffles
考题
单选题The unloading system on an air compressor will （）.A
increase compressor discharge pressure on demandB
increase compressor operating speed as necessaryC
allow the motor to turn the compressor opposed only by frictionD
reduce the compressor frictional load when starting
考题
单选题（）are supplied by main switchboard directly.A
Suez Canal searchlight, air compressor and air conditioning compressorB
Air compressor, boiler blower and refrigeration plantC
Boiler blower, Suez Canal searchlight and refrigeration plantD
Suez canal searchlight, air compressor and boiler blower
考题
单选题Broken valve strips in an operating low pressure, air compressor will cause （）.A
an immediate crankcase explosionB
oil contamination in the compressed airC
a decrease in compressor capacityD
no immediate loss of the compressed air capacity
考题
单选题Before starting an air compressor, It should be （）.A
turnedB
oil level checkedC
filled with waterD
A and B
考题
单选题Before starting an air compressor, It should be （）.A
unloadedB
primedC
filled with waterD
greased
考题
单选题The air compressor pumps air to the （）.A
expansion tankB
combustion chamberC
air receiverD
evaporator
考题
单选题During working of an air compressor, （） should be drained.A
inter coolerB
cylinderC
outlet pipeD
inlet pipe
考题
单选题The air compressor pumps air to the （）.A
air cylinderB
combustion chamberC
steam drumD
expansion tank
考题
单选题The air compressor pumps air to the（）.A
engine cylinderB
air bottleC
evaporatorD
condenser
考题
单选题The air filter is fixed in the （） of an air compressor.A
inlet pipeB
outlet pipeC
inter coolerD
after cooler
考题
单选题If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.A
combustion control air systemB
supply air systemC
ships service air systemD
low pressure deck air system
考题
单选题An un-loader is installed on an air compressor to （）.A
bypass the high pressure stage to the low pressure stage on 100% of the air compressors in serviceB
prevent excessive inter-stage pressure buildupC
control compressor discharge pressureD
remove all but the frictional load during starting
考题
单选题Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.A
an auxiliary reservoirB
a controlling air bottleC
an emergency air compressorD
a main air compressor
考题
单选题To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should （）A
admit only enough fresh outside air to provide proper ventilationB
reduce the air reheating system loadC
lower the compressor head pressureD
operate the purge recovery unit continuously
考题
单选题Air compressor cylinder un-loaders enable the compressor to （）.A
vary their speed according to temperature and loadB
start and come up to speed before air compression beginsC
change speed according to overload demandsD
reduce compressed air charge density
考题
单选题What preventative maintenance should be done frequently to diesel engine starting air receivers?（）A
Drain the accumulated moistureB
Test the relief valvesC
Watch the temperature to prevent fluctuations in pressureD
Clean the interior to remove oil and foreign matter
考题
单选题Routine maintenance on a Central Control Room hermetically sealed air conditioning unit should include （）A
changing the air filterB
recharging the systemC
changing compressor lubricantD
renewing container vacuum
考题
单选题If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.A
control air systemB
forced draft air systemC
supply air systemD
ships service air system
考题
单选题When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should（）.A
secure all ventilationB
shut down the exhaust blowersC
shut down the intake blowersD
ventilate the cargo holds
热门标签
最新试卷
