The study says there must be a complete ______ of air traffic control systems.
举一反三
- “空中交通管制”可以表达为"_____". A: air traffic warning B: air traffic control C: traffic control D: air traffic clearance
- Air traffic control provides traffic ______ services to the aircraft on a time permitting basis.
- People _____ in air traffic control may monitor aircraft movement in control tower.
- The volume of scheduled flights is ________ the air traffic control system.
- Lesson 5 Understanding Text A T or F -3Air traffic control units only specialize in providing air traffic control services.