现代大型民用运输机起落架的配置型式通常采用（）。

When pilots （ ） back on the wheel, the nose of the aircraft moves up.

（ ） is the main source of lift.

The wing of the airplane is shaped to take advantage of （ ） ．

The basic principle of pressure differential, also known as （ ） , says “as the velocity of a fluid (air) increases, its internal pressure decreases”.

Currently, （ ） is installed on large and medium-sized transport aircraft for pilots’ own navigation.

（ ） is the upward force created by the effect of airflow as it passes over and under the wings.

（ ） does not rely on line-of-sight transmissions.

VOR navigation information can be provided by the （ ） ．

The HSI does not provide （ ） information.

On aircraft equipped with course compass, the situation when aircraft deviate from course use （ ）.