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)
The air is ()(有毒的).
- A、humid
- B、damp
- C、toxic
- D、mould
参考答案
更多 “The air is ()(有毒的).A、humidB、dampC、toxicD、mould” 相关考题
考题
Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?A.Cooling the air to a temperature just above dew pointB.Heating the air to a point at which moisture will boil off ,then re-cooling itC.Cooling the air to a point below dew point, then reheating itD.Heating the air and then cooling it to a point below dew point
考题
In Leon Nacson’s view, air and water are our Number One priorities for the following reasons except ().A、he cannot understand why people are polluting air and waterB、there will definitely be no fresh air and clean water for future generationsC、we would run out of air and water if we didn’t stop polluting themD、air and water polluting are the current and futu
考题
In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A.Noise coming from that air starting valveB.Continuous operation of the starting air compressorC.Zero air pressure in the air starting systemD.Overheated starting air pipe to the cylinder head
考题
Temperature and moisture characteristics are modified in a warm or cold air mass due to ______.A.pressure changes in the air massB.movement of the air massC.the heterogeneous nature of the air massD.upper level atmospheric changes
考题
Diesel engines obtain combustion air through turbo chargers,blowers,or ______.A.Air startersB.CarburetorsC.Natural aspirationD.Air receivers
考题
Air Jordan 32不仅能够引领场外搭配的潮流还具有着出众的实战性能,它的设计灵感来源于以下哪双Air Jordan系列球鞋?()A、Air Jordan1B、Air Jordan2C、Air Jordan3D、Air Jordan4
考题
ATA100中ATA是什么的缩写?A、Air Transport AssociationB、Air Training AssociationC、Air Traffic Association
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Temperature and moisture characteristics are modified in a warm or cold air mass due to ().A
pressure changes in the air massB
movement of the air massC
the heterogeneous nature of the air massD
upper level atmospheric changes
考题
单选题Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?()A
Holding the valve open for a long periodB
Increasing the starting air pressure usedC
Opening the stating air valve quicklyD
Reducing the starting air valve size
考题
单选题Cumulonimbus clouds are formed by().A
vertical air movementsB
heavy rainstormsC
horizontal air movementsD
any movement of moist air
考题
单选题The engine will fail to start unless ().A
the pressure of the starting air is high enoughB
there is enough air in the air reservoirsC
the air is supplied into the cylinders in the appropriate sequenceD
all of the above
考题
单选题Diesel engine air start system check valves are opened by ()A
an air start camB
cylinder compression pressureC
starting air pressureD
valve springs
考题
单选题() is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A
An air receiverB
An operating valveC
An automatic valveD
An air distributor
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Which condition indicates the air side fouling of an after-cooler on a turbocharged diesel engine?()A
An increased air temperature differential between the cooler inlet and outletB
A decrease in the air pressure differential across the coolerC
Excessive condensate forming in the air boxD
A decrease in the air temperature differential between the cooler inlet and outlet
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() supplies pilot air to control the cylinder air start valves.A
An air compressorB
An indicator cockC
An air distributorD
A safety valve
考题
单选题Pump up the starting air reservoirs to their maximum pressure and ()the air reservoirs and air system.A
openB
closeC
drainD
vent
考题
单选题Disastrous explosions have been caused by accumulations of oil or oil vapour in air lines not drainedAccording to the above sentence, which of the following statements is true?()A
Oil vapour in air piping are dangerousB
Explosion will cause oil vapouring in air linesC
Oil vapour in air piping should be drainedD
Oil in air piping should not be drained
考题
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?()A
noise coming from that air starting valveB
continuous operation of the starting air compressorC
zero air pressure in the air starting systemD
overheated starting air pipe to the cylinder head
考题
单选题Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?()A
Cooling the air to a temperature just above dew pointB
Heating the air to a point at which moisture will boil off ,then re-cooling itC
Cooling the air to a point below dew point, then reheating itD
Heating the air and then cooling it to a point below dew point
考题
单选题Which of following functions is not one of the functions of air conditioner?()A
refreshing the airB
making person upsetC
adjusting the air humidityD
adjusting the air temperature
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
热门标签
最新试卷