更多"[单选题]The highest VHF frequency of r"的相关试题:
[单选题]The lowest VHF frequency of radio communication between air and ground is _______ .
A.118.00MHZ
B.118.1MHZ
C.117.5MHZ
D.117.0MHZ
[单选题]VHF communication frequency is _______.
A.100 MHZ~350 MHZ
B.10 MHZ~136.97 MHZ
C.30 MHZ~300 MHZ
D.2 MHZ~29.9999 MHZ
[单选题]The communication frequency for VOR is between _______ .
A.100Mhz~350Mhz
B.10Mhz~136.975Mhz
C.2Mhz~29.9999Mhz
D.30Mhz~300Mhz
[单选题]_______ is a non-government air/ground radio communication facility which may provide air¬port advisory service at certain airports.
A.UNICOM
B.Broadcast facilities
C.Radio
D.Fix communication
[单选题]When ground-air communication failure occurs, controller should _______.
A.notify the units concerned
B.maintain separation between the radio failure aircraft and other known traffic
C.consult with RTE operator
D.record the time and position
[单选题]The radio call to alert ground personnel when an A/C is having difficulty, but is in no immediate danger, is _______.
A.MAYDAY MAYDAY MAYDAY
B.HELP HELP HELP
C.PANPAN PANPAN PANPAN
D.SOS SOS SOS
[单选题]下列关于 VHF-1、VHF-2、VHF-3 天线位置描述正确的是:
A.VHF-2 和 VHF-3 天线位于机身下部,VHF-1 的天线位于机身上部
B.VHF-1 和 VHF-2 天线位于机身下部,VHF-3 的天线位于机身上部
C.VHF-1 和 VHF-3 天线位于机身下部,VHF-2 的天线位于机身上部
[单选题]Over mountainous region and plateau area the safe altitude along air route is _______ m,above the highest elevation within 25KM on each side of the centre line of the air route.
A.1000
B.600
C.300
D.400
[单选题]If air-ground communication failure occurs, the pilot should _______.
A.fly as filed plan
B.descend and land as soon as possible
C.establish contact on another frequency or other A/C and other ATC stations
D.turn back to the take off airport
[单选题]For aircraft equipped with a transponder, crew members should squawk_______if they lost radio contact with ground.
A.A7400
B.A7500
C.A7600
D.A7700
[单选题]_______ is a group of alphanumeric characters used to identify an aircraft in air-ground communication.
A.Identification
B.Type of an aircraft
C.Communication methods
D.Aircraft call sign
[单选题]在 737-300 上,VHF——1 和 VHF——2 是相互独立的,则:
A.机长、副驾驶可以同时使用不同的通讯电台通话
B.机长只能使用 VHF——1,副驾驶只能使用 VHF——2
C.机长只能使用 VHF——2,副驾驶只能使用 VHF——1
D.机长、副驾驶不能同时说话
[单选题]当VHF收发信机处于“本地工作状态”时，VHF收发信机（）。
A.可以发射
B.可以接受
C.可以发射和接受
D.不能发射和接受
[单选题]当VHF收发信机处于“遥控工作状态”时，VHF收发信机（）。
A.可以发射
B.可以接受
C.可以发射和接受
D.不能发射和接受
[单选题]VHF、ATC应答信号等，都可以认为是沿（）在收发天线之间传播的。
A.弧线
B.曲线
C.折线
D.直线
[单选题]对VHF-700 VHF收发机测试时，其VSWR（电压驻波比）正常值必须是（ ）
A.＜3.0
B.＜2.5
C.＞3.0
D.＞2.5
[单选题]在地面有 VHF 通讯,为了不受周围建筑物的干扰,通常用哪部 VHF 天线通讯?
A.VHF-1
B.VHF-2
C.VHF-3
[单选题]Flight altitudes in the holding area: from 600m upward, there is a flight altitude for every 300m. The true height between the lowest holding altitude and the highest obstacle should not be less than _______ m, the true height between the lowest holding altitude and the initial altitude in an instrument approach should not be less than _______ m.
A.600, 300
B.300, 600
C.900, 600
D.600, 900
