超星 - Lesson 12 过关检测：词汇与结构 - 查题吧

单选题

词汇与结构A localizer (LOC) antenna array generally consists of several pairs of ____ antennas.

A. precision
B. directional
C. non-directional
D. non-precision

单选题

词汇与结构Each ILS antenna ____ a narrow beam, one slightly to the left of the runway centerline, the other to the right.

A. transmits
B. sends
C. transfers
D. delivers

单选题

词汇与结构A glideslope or glidepath (GP) antenna array is sited to one side of the runway ____ zone.

A. threshold
B. touchdown
C. stopway
D. stopend

单选题

词汇与结构The ____ of the glideslope signal is arranged to define a glideslope of approximately 3° above ground level.

A. centerline
B. front
C. back
D. sideline

单选题

词汇与结构Localizer and glideslope carrier frequencies are ____ so that only one selection is required to tune both receivers.

A. seperated
B. matched
C. paired
D. mated

单选题

词汇与结构Localizer and glideslope signals are displayed on an indicator in the instrument ____. This instrument is generally called the omni-bearing indicator or nav indicator.

A. board
B. panel
C. table
D. stand

单选题

词汇与结构The pilot controls the aircraft so that the indications on the instrument remain centered on the display. This ensures the aircraft is following the ____ centreline.

A. ILS
B. IGS
C. VOR
DME

单选题

词汇与结构____ guidance, shown on the instrument by the glideslope indicator, aids the pilot in reaching the runway at the proper touchdown point.

A. Horizontal
B. Vertical
C. Parallel
D. Precision

单选题

词汇与结构Some aircraft possess the ability to route ____ into the autopilot, allowing the approach to be flown automatically by the autopilot.

A. signals
B. commands
C. requirements
D. power

单选题

词汇与结构The localizer provides for ILS facility ____ by periodically transmitting a 1020 Hz morse code identification signal.

A. localization
B. identification
C. correction
D. recognition

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