更多"[单选题]The localizer antenna arrangem"的相关试题:
[单选题]The localizer antenna arrangement of the dual frequency installation is such that the course beams are （
）and sidelobes are （ ）.
A.A、 narrower、 low
B.B、narrower
、high
C.C、wider
、low
D.D、wider
、high
[单选题]The localizer antenna arrangement of the single frequency installation is such that the course beams are （
）and sidelobes are （ ）.
A.A、 narrower、 low
B.B、narrower
、high
C.C、wider
、low
D.D、wider
、high
[判断题]The localizer antenna arrangement of the daul frequency installation is such that the course beams are
narrower and sidelobes are low.（
A.正确
B.错误
[单选题]The purpose of a localizer station is to provide（ ）about the runway centerline to landing aircraft.
A.A、lateral guidance
B.B、vertical guidance
C.C、 distance informati on
D.D、 directio n guidance
[单选题]对于缩写LLZ（Localizer ）解释正确的是
A.航向台
B.中指点标
C.下滑台
D.外指点标
[判断题]Either an omnidirectional antenna or a unidirectional antenna could be used as DME antenna.（ ）
A.正确
B.错误
[单选题]Which one could be used as DME antenna in the following four items（
）.
A.A、LPD
antenna
B.B、 unidirection al antenna
C.C、V-ring antenna
D.D、Yagi antenna
[单选题]天馈线显示信息:GNSS antenna short时,表示天馈线( )( )
A.天馈线开路
B.天馈线短路
C.天馈线正常
D.天馈线没电
