更多"[单选题]APU will automatic shutdown wh"的相关试题:
[单选题]When APU running, APU FUEL PUMP starts ____.
A. if the tank pressure is not available
B. all time
C. if the APU FUEL PUMP is ON
[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]Do not use ____ when APU supplies bleed air to avoid bleed system damage.
A. LP ground unit
B. HP ground unit
C. engine bleed
[单选题]When engine and APU work, APU bleed valve is selected ON, which of the following is correct?：
A. Engine bleed valve is closed, X bleed valve is closed, and APU bleed valve is open
B. Engine bleed valve is open, X bleed valve is on, and APU bleed valve is closed.
C. Engine bleed valve is closed, X bleed valve is open and APU bleed valve is open.
[单选题]When using APU bleed, air conditioning unit flow is automatically selected in：
A. high-order position
B. normal position
C. low position
[单选题]When did APU N becomes amber on the ECAM?
A. N ≥99%
B. N ≥102%
C. N ≥107%
[单选题]APU START pb-sw “AVAIL” light on when：
A. APU inlet flap opened
B. APU N is above 99.5 % or 2 s after N reaches 95 %.
C. APU was used. contactor closed
[单选题]APU维护面板上的测试按钮在测试APU时,APU必须在:
A.在ON 位
B.在OFF 位
C.均可
[单选题]若当APU在运转时按压APU火警测试电门，APU将:
A.关车
B.保持运转
C.提供气源
[单选题]如果APU可用且APU引气电门在ON位，则APU BLEED以_色显示?
A.蓝
B.绿
C.白
[单选题]APU转速大于_ 时，按压顶版上的APU BLEED钮后APU引气供给气源系统。
A.大于85%
B.大于90%
C.大于95%
[单选题]在APU运转期间APU最大EGT恒定
A.正确
B.不正确
[单选题]起动后，APU如果不需要，APU主电门关，APU的可用灯什么时候熄灭？
A.将APU主电门选择至关位后
B.APU冷却之后
C.APU引气活门关闭后2分钟
[单选题]APU起动时，APU主电门按压后，必须要在ECAM APU页面上看到FLAP OPEN（折流门打开）的指示才能按压START按钮：
A.正确
B.不正确
[单选题]探测到APU漏气时APU BLEED 灯亮
A.蓝色
B.琥珀色
C.红色
[单选题]Why select APU bleed ON, just before engine shutdown?
A. To save fuel
B. To prevent passengers feel uncomfortable
C. To prevent engine exhaust fumes from entering the air conditioning
[单选题]If the APU is started on batteries only, it should be started within ___ min after the selection of batteries to AUTO.
A.5
B.10
C.30
[单选题]地面APU运转时,APU发生火警,则以下说法正确的是1)APU会自动停车且会自动灭火。2)按压外电源面板上的“APUSHUTOFF”电门可关断APU。3)释放驾驶仓里APU火警按钮可关断APU。4)按压驾驶仓里APU自动释放测试按钮可关断APU
A.1),2),3)
B.2),3),4)
C.2),3)
D.1),2),3),4)
[单选题]当APU主电门在ON位时,APU系统有电,且ECB进行通电测试;而后APU进气系统门打开,APU燃油隔离活门打开
A.正确
B.不正确
