更多"[单选题]Modern machinery _______ been "的相关试题:
[简答题]The repeating signal shall be installed within the sighting distance of main signal, at a place as far from the main signal as possible.
[简答题]Home signal must be installed for stations with train receiving operation.
[简答题]Starting signals shall be installed for the main track and receiving-departure track.
[简答题]In the case no approach signal is installed in advance of the home signal and block signal of a non-automatic block section, distant signal shall be installed.
[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]Two generators control units (GCU) control the output of their respective generator. Which?of?the?following?is?true ？
A. The main functions of GCU is control the frequency and voltage of the generator output.
B. GCU protects the network by controlling the associated generator line contactor (GLC).
C. all of the above
[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
[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]For one engine out climb performance, when the specified procedure requires a turn, except if otherwise stated on the RTOW chart, the turn should be performed
A. with a maximum bank of 15 °until the aircraft reaches 1500 ft or until green dot.
B. There should not be such a procedure. If one engine is out during takeoff, the one engine out procedure must be followed. The aircraft can make maneuvers and turns only when it is above green dot.
C. As long as it is required by obstacle clearance, there is no specific limitation for the bank. However the bank is protected to a maximum of 33 °.
