A、To prevent door opening if pressure is <3000 psi.
B、To lock the selector in the OPEN/CLOSE position until the actuator is fully opened/retracted.
C、To ensure correct pressure in the extension chamber of the actuators before closing.
答案：C
A、To prevent door opening if pressure is <3000 psi.
B、To lock the selector in the OPEN/CLOSE position until the actuator is fully opened/retracted.
C、To ensure correct pressure in the extension chamber of the actuators before closing.
答案：C
A. To optimize the zone temperature by adding cold air
B. To optimize the zone temperature by adding hot air
C. To regulate the hot air pressure
A. 50 % RPM.
B. 40 % RPM.
C. 95 % RPM.
A. Yes, wing tank pumps are always runing
B. No, only when center tank is empty
C. No, because of center tank pump priority
A. No concequence. the movement of the flap surfaces is not affected.
B. The system is locked and flap movement is no longer possible.
C. The flap surfaces extend (retract) at half speed.
A. IGN START selection.
B. Flame out detected.
C. ECU failure.
A. The LH and RH Wing ducts, packs and mid fuselage APU duct.
B. The pylon.
C. A and B.
A. To ensure self centering of the nose gear.
B. To adjust the nose wheel steering speed.
C. To adjust the rate of depressurization in the hydraulic block.
A. Low
B. Normal
C. High
A. The speed brake function is inhibited.
B. ALL spoilers receive an additional deployment order until one reaches its maximum possible deflection.
C. The symmetrical surface is retracted until the difference between the two surfaces is equal to the roll order.
A. ELACs and SECs
B. ELACs,SECs and FACs
C. FACs
