现代民航机的副翼分为内副翼和外副翼，其中内副翼（）。

Airplanes with two sets of wings are referred to as （ ） ．

Airplanes with a single set of wings are referred to as （ ） ．

The （ ）of a gas turbine is the place where fuel and air mix properly.

The aileron on modern civil aircraft consists of inner aileron and outer aileron. The outer aileron is suitable for（ ）.

The （ ） is attached to the back of the horizontal stabilizer.

The （ ） is mounted at the back of （ ）．

The （ ） is attached to the back of the （ ） ．

During flight, （ ） can be used to move the nose left and right for desired heading.

During flight, （ ） can be used to move the nose up and down for desired altitude or height.

To initiate a turn, the pilot use the （ ） and （ ） in combination.