更多"[单选题] Twenty people were______ woun"的相关试题:
[单选题]When APU supplies air for air-conditioning unit, if zone temperature can’t be satisfied, air-conditioning unit will send signal to ( ) for increasing air flow：
A.Air-conditioning unit ram air inlet
B.APU electric control box
C.Air conditioning unit flow control valve
[单选题] Tom ________ more than twenty pounds on the novel.
A. spent
B. paid
C. cost
D. took
[填空题]room air conditioner
[单选题]Bleed air from engine：
A. is to use cold bleed air of engine fan and it’s cooled by air heat exchanger
B. It’s only cooled by the air of air conditioning
C. It’s cooled by ambient air
[单选题]当Air/OilCooler堵塞时
A.滑油泵将停止工作
B.APU滑油过热导致APU
C.压力释放活门将释放滑油回到滑油泵的吸油侧
D.滑油低压保护性停车
[单选题]HP air is supplied by：
A. Engine 1 and/or engine 2 pneumatic system, APU load compressor, HP ground connection
B. Engine 1 and/or engine 2 pneumatic system
C. Engine 1 and/or engine 2 pneumatic system or APU load compressor
[单选题]Minimum ram air turbine speed is:
A. 140kt
B. 170kt
C. 195kt
[单选题]When does ram air turbine deploy automatically?
A. When AC BUS 1 and AC BUS 2 are both lost and the speed is greater than 100kt
B. When blue pump does not work
C. When blue system is under low pressure (lower than 1750psi)
[单选题]Air outlet valve of pressurization system:
A. It’s controlled by a set of system at a time, and it can’t be converted.
B. It can be converted through the option pushbuttons 1 or 2 on pressurization panel.
C. It can be converted by selecting manual position at least 10 seconds through pressurization panel, and then convert to automatic position.
[单选题]Air vent of vent surge tank locates
A. inboard of the tank in each wing
B. outboard of the tank in each wing
C. in wing tank
[单选题]Do not use conditioned air simultaneously from packs and LP ground unit to ____：
A. to avoid chattering of the non-return valves
B. to avoid airflow speed exceed 1.2kg/s
C. to avoid the damage of bleed system
[单选题]The minimum recommended starter air supply pressure is ____, when the start valve is open.
A. 20PSI
B. 25PSI
C. 30PSI
[单选题]Hot air heating protects which critical areas of the aircraft?
A. Three outboard leading-edge slats of each wing
B. Engine air intakes
C. Both correct
[判断题]风门的英文是air door。
A.正确
B.错误
[单选题]The smoke hood uses a chemical air regeneration system, the hood should work satisfactorily for at leastminutes
A.20
B.15
C.10
[单选题]AFT cargo compartment air is controlled by outlet isolation valve and evacuated to:
A.avionics bay
B.overboard
C.air-conditioner pipe
[单选题]Hot AIR pushbutton is at OFF position：
A. Valve regulate HP pressure
B. Valve opens, and air regulation valve closes
C. Valve closes, and air regulation valve opens
[单选题]During landing and taxiing , air-conditioning unit inlet valve will be open when the speed is lower than：
A.77kt（after 30s delay）
B.70kt（after 3 minutes）
C.70kt（after 20s delay）
[单选题]Flow control valve of air conditioning unit：
A. Pneumatic operation, electric control
B. Electric operation, pneumatic control
C. It will be automatically opened when engine starts
