航空器采用主动式精密进近着陆时，目前我国航站能提供引导的地面设备是（）。

GDT, expect one minute delay （ ） B737 taxiing behind.

Ground, JAL167, stand D3, request pushback; JAL 167, pushback （ ） .

PAA120, slot time 55, start up at your own discretion means that （ ） .

SF235, Stand B3, information L, request （ ） for New York.

BAW337, your signal is unstable，check your transmitter and give me （ ） .

Station calling ground, I can’t read you, please （ ） 119.l.

Your signal is jammed, please check your （ ） .

You are loud and clear means that I read you （ ） .

I can hear you but with difficulty refers to readability （ ） .

Aircraft undertaking agricultural missions in hilly or mountainous areas should keep a distance of （ ） m from the crops