飞机燃油系统除了储存燃油并向发动机供油外，还必须具备的功能包括（）。

An above glide slope indication from a tri-color VASI is （ ） light.

A below glide slope indication from a tri-color VASI is （ ） light.

An on glide slope indication from a two-bar VASI is （ ） ．

Which is true regarding STARs?

An above glide slope indication from a two-bar VASI is （ ） ．

A below glide slope indication from a two-bar VASI is （ ） ．

The color of anti-collision light on the aircraft is （ ）.

The most complex approach lighting systems are designed for runways with （ ） ．

Airport lighting system should be opened twenty minutes before the aircraft is expected to （ ） ．

Large “Xs” on taxiways indicate that （ ） ．