Audio Integrating controls the output of communications and navigation receivers into the flight crew headphones and speakers, and the output of the flight crew microphones into the communications transmitters.

A. 给轮胎放气。

B. 给轮胎充气。

C. 给机轮充气。

A. 为了使句子简短不要增加太多名词。

B. 为了使句子简短不要忽略名词。

C. 不要为了使句子简短而省略名词。

A. Adjust the tension in the wires to the correct value.

B. Adjust the tension in the cables to the correct value.

C. Adjust the torque in the cables to the correct value.

A. 包含大写字母加名词或数字加名词的术语，通常用于描述某物的形状或结构。

B. 包含大写字母加名词或数字加名词的条款，通常用于描述某事的形式或特性。

C. 项目首字母加名词或者数字加名词的，通常要描述某物的外形和构造。

A. Stringers and the upper wing skin are called vent channels. The vent channels go through drain float valves in the center tank.

B. Stringers and the upper wing skin are compose of the vent channels. The vent channels got exhaust float valves from the center tank.

C. Stringers and the upper wing skin make the vent channels. The vent channels have drain float valves in the center tank.

A. 从软管开始弯曲的地方测量软管的弯曲半径。

B. 在软管弯曲的地方开始测量软管的内径。

C. 从软管弯曲的内侧开始测量软管弯曲的角度。

A. If the airframe manufacturer modifies the component manufacturer＇s text or description by any means, he shall use his own headmaster.

B. If the airframe manufacturer changes the component manufacturer＇s text or illustration in any way, he shall apply his own masthead.

C. If the airframe manufacturer changes the component manufacturer＇s text or illustration in one way, he shall modify his own masthead.

A. English is not often the mother language of the readers of technical files.

B. English is not often the private language of the readers of technical books.

C. English is not often the required language of the readers of technical pamphlet.

A. This is the maximum portion of flammable vapors in air. If the portion is bigger, when an ignition source touched the gas, it would cause the fire to be diffused.

B. This is the minimum volume of flammable vapors. If the volume is lower, when the gas contacted with an ignition source, the fire would not come out.

C. This is the minimum density of flammable vapors in air. If the density was lower, when an ignition source touched the gas, it would not cause the spread of flame.

A. 控制水平安定面/前置平尾位置和移动的系统部分。

B. 控制垂直安定面/鸭翼位置和移动的系统部分。

C. 控制水平/前翼位置和移动的系统部分。