更多"[单选题]Two generators control units ("的相关试题:
[单选题]Where are the two batteries connected , if they need charging?
A. DC BAT BUS
B. DC ESS BUS
C. DC BUS 1和DC BUS 2
[单选题]Though we have spent two nights in _______ the problem, we still can't find a solution.
A.working in
B.working out
C.working up
D.working on
[单选题]关于GCU维护测试的描述,正确的是:
A.只能在地面状态下,并且IDG已经停止工作
B.可以在任何状态下,但IDG已经停止工作
C.只能在地面,但允许IDG处于任何状态
D.系统在任何状态下均允许进行GCU的维护测试
[单选题]关于飞机发动机和APU的发电机控制组件GCU的说法错误的是:
A.发电机的输出电压是由GCU控制调节的
B.左右发动机的发电机GCU与APU发电机的GCU一样,可以互换
C.发电机的故障保护是通过GCU实现的
D.发电机的电源参数是GCU直接送到SDAC显示的(都是通过GAPCU实现的)
[单选题]两部发电机控制组件(GCU)控制各自发电机的输出，以下说法哪种正确？
A. GCU的主要功能是控制发电机的输出频率和电压
B. GCU通过控制相应的发电机电路接触器(GLC)来保护整个网络
C. 以上都对
[单选题]In normal operation, which display units does DMC1 provide data to？
A. captain’s PFD and ND, upper ECAM
B. F/O’s PFD and ND, lower ECAM
C. captain’s PFD, F/O’s ND, both upper and lower ECAM
[单选题]The yellow trapezoidal index moves beneath the roll index. It represents the lateral acceleration of the aircraft on ground and the sideslip in flight(as computed by the FAC). What does 1 centimeter of displacement indicate?
A. 0.1g
B. 0.2g
C. 0.3g
[单选题]Some advisories are inhibited depending on the aircraft altitude, which is correct?
A. A. All intruders flying below 380ft AGL when the own aircraft altitude is below 1 700ft AGL
B. B. All RA below 1 100ft in climb and 900ft in descent. In this case, the RAs are converted into TAs
C. C. Both correct
[单选题]( ) are services actively involved in the safe and efficient passage of the vessel through the VTS area.
A. Information service
B. Navigational assistance service
C. Traffic organization service
D. Allied service
[单选题] The writer thinks it necessary to protect the forests.
A. T
B. F
[简答题]It shall be confirmed before electric test that the manual transition of each traction point is normal and the tested switch, the associated switches with follow up movement and protective switches can meet the transition conditions.
[单选题]Which of the following statement about the thrust control system is incorrect when the FADEC reverts to N1 mode (rated or unrated)?
A. Autothrust control and alpha-floor protection are lost.
B. FADEC is still providing monitoring and control.
C. It is not possible to return to the EPR mode even if the failure has disappeared.
[单选题]The main purpose of using flexible takeoff thrust is to
A. save engine life.
B. provide a safer takeoff due to increased takeoff roll time and reduced difficulty in controlling during engine failure when takeoff with full thrust.
C. reduce engine noise and improve passenger comfort.
[单选题]Which hydraulic system is used for reverse thrust?
A. Green system is used for engine 1 and blue system is used for engine 2
B. Green system is used for engine 1 and yellow system is used for engine 2
C. Blue system is used for engine 1 and yellow system is used for engine 2
[单选题]( ) mode sends progressive pressure to the brakes 4 s after the ground spoilers deploy
A. MAX
B. MED
C. LO
[单选题]Speed of a vessel required for the passage through a canal, fairway, etc, called ( ).
A. transit speed
B. safe speed
C. fairway speed
D. maneuvering speed
[单选题]If the actual takeoff weight is lower than the lowest weight value of a takeoff weight column,
A. use extrapolation
B. Do not takeoff because the speeds cannot be determined.
C. use full thrust for takeoff
[单选题]The flight mode changes to flare mode when the aircraft passes ___ ft RA as it descends to land.
A.100
B.50
C.30
