更多"[单选题] A sound scientific theory sho"的相关试题:
[单选题] A sound scientific theory should be one that ___________________.
A. works not only under one set of conditions at one time, but also under the same conditions at other times
B. does not allow any changes even under different conditions
C. can be used for many purposes
D. leaves no room for improvement
[多选题]Under which circumstance(s) should ONE ADR KEEP ON, TWO ADRs off applied in OEB 48 abnormal V ALPHA PROT:
A.AT ANY TIME, with a speed above VLS, if the aircraft goes to aCONTINUOUS NOSE DOWN PITCH RATE that cannot be stopped with backward sidestick inputs.
B.If the Alpha Max strip (red) completely hides the Alpha Prot strip (black and amber) in a stabilized wings-level flight path (without an increase in load factor).
C.If the Alpha Prot strip (black and amber) rapidly moves by more than30kt during flight maneuvers (with an increase in load factor), with AP ON and speed brakes retracted.
[单选题]Altitude warning is composed of C chord sound and PFD’s altitude window pulses in yellow or flashes in amber. Which of the following is correct？
A. FWC generates altitude warning when the aircraft approaches a preselected altitude or flight level or when it deviates from its selected altitude or flight level
B. This warning results from a comparison between the altitude (ADIRS) and the preselected altitude displayed on FCU.
C. Both of the above
[单选题]When can both autopilots (one active, one standby) be engaged at a time using ILS approach?
A. When aircraft is stable in altitude capture of glide-slope
B. As long as loc capture
C. When the localizer/glide-slope or roll out or go-around mode is armed or engaged
[单选题]If one tire is deflated on one or more gears (ie. a maximum of three tires), the speed should be limited to ____kt when turning.
A.7
B.10
C.13
[单选题]If one FD fails or one FMGC is inapplicable (e.g. 1 fails), FMA may show:
A. - FD 2
B. - FD -
C. 2 FD 2
[单选题]When one AP or one FD is engaged while both AP/FD were previously OFF, roll FD bar:
A. Flashes 10 seconds
B. Flashes steadily
C. No FD bar
[单选题]During the future examinations you should avoid ________ such mistakes.
A.make
B.to make
C.making
D.made
[简答题]Bi-directional operation should be supported in the design of section blocking. For double-track and bi-directional automatic block section, when the train is running in reverse direction, interstation auto-block may be used, and automatic block may also be used as required.
[简答题]CTCS level transition information should be provided by balise groups.
[简答题]The access network design should choose optical access technology, and also may choose wireless access technology or hybrid access technology.
[单选题]The backup brake check should first:
A. park brake ON
B. check CHOCK in place
C. Y ELEC PUMP ON
[单选题]DOME light should be on because:
A. It can provide lighting.
B. It is the only lighting source in the EMER ELEC configuration.
C. According to the need of crew
[单选题]DE-ICING REPORT should include:
A. Type of fluid used and the mix ratio of fluid to water
B. Holdover time
C. Both correct
[单选题]The operator should check the maximum thrust (TOGA) at regular intervals in order to detect any engine deterioration. Is this statement correct?
A. Yes, it is correct. It can be replaced by maintaining an adequate engine performance monitoring program to follow up the engine parameters.
B. Yes, it is correct and it is irreplaceable.
C. No, it is not necessary because engines are definitely reliable.
[单选题]When encounter windshear, flight crew should inform ATC ASAP, reporting information should contain.
A.the increment/reduction of height and of speed when encounter windshear
B.number of passengers
C.Aircraft weight and fuel quantity
[单选题]In which situation should we refuel?
A.When the aircraft which needs to refuel is park in the hanger
B.Sandstorm and heavy rain above the airport, lightning strike within 8km visual range
C.Vent of aircraft fuel system is more than 25m far to the important fire protection zone of hangar/aeroshed
[单选题]In which situation should ENG START selector be manually selected?
A.Below 10000 feet
B.Encountering severe turbulence
C.Going around
[简答题]Track circuit should be used for track occupancy detection, and axle counting track occupancy detection device may also be used.
