LOC和DME合装时，二者频率（）。

“Recycle squawk A0612” means （ ） .

“A575” is a name of a route. “A” means （ ） .

“FMC” is a system in an aircraft to manage the （ ） .

“Deteriorating weather” means the weather is getting （ ） .

When dominant visibility or runway visual range is less than （ ） m, air traffic control unit should report RVR.

Azimuth means horizontal （ ） or direction.

According to characters and conditions of flights on the route, ATS route is divided into（ ） and （ ）route.

Fuel （ ） means the quantity of fuel carried by now.

The opposite meaning of “speed up” is （ ） .

When circumnavigating the thunderstorm, the aircraft must remain at least（ ）km from the CB or solid clouds at night.