Turbine engine tachometers usually measure speed as a percentage of the nominal maximum speed of the turbines.

A. Accelerate Stop Distance is the distance required to accelerate an airplane to a specified speed and, assuming failure of an engine at the instant that speed is attained, to bring the airplane to a stop.

B. Accelerated stop distance refers to the distance required to promote an aircraft to a stipulated speed, assuming that engine failed occurs at that speed and the aircraft stops flying.

C. Accelerating stop distance is defined as the distance requiring to speed up an aircraft to a specific speed, assuming that engine failed at that speed and the aircraft stops flying.

A. This commonality requires greater learning and understanding for pilots, aircraft maintenance technicians and engineers alike.

B. This commonality makes it easier for pilots, aircraft maintenance technicians and engineers alike to learn and understand.

C. This commonality brings about better learning and understanding of the pilots, aircraft maintenance technicians and engineers alike.

A. The introduction should be included in an alphabetical index by subject.

B. An alphabetical index by subject is to be included in the introduction.

C. The introduction includes an alphabetical index subject.

A. 排气系统指将发动机燃气排出机外的组件和部件。

B. 排气系统指将发动机引气导入机身的装置和组件。

C. 引气系统指将发动机废气导出机外的装置和组件。

A. 调整倾斜仪，直到气泡位于中心。

B. 在倾斜仪上的气泡位于中心后进行调整。

C. 将倾斜仪调整到气泡的中心位置。

A. Three computers collect data and put them together on the data link to the display unit.

B. Three computers collect data and put them together on the data upload to the display unit.

C. Three computers collect data and put them together on the data conveyed to the display unit.

A. 在测试结束时要监控速度指示。

B. 在测试后期要监控速度的持续性。

C. 持续监控速度指示至测试结束。

A. Set the tension indicator to zero.

B. Put the torque indication to zero.

C. Put the shear instrument to zero.

A. 本文件中的任何零件没有出版商的许可不得复制。

B. 本文件中没有任何一个部分是没有得到出版商书面许可的。

C. 未经出版商书面许可， 本文件任何部分不得以任何形式复制。

A. The turbo engine includes a compressor bleed system, air cooling system, hot air system, and engine starting system. The compressor bleed system can control the airflow through the engine, and the air cooling and hot air systems are used for engine anti-icing.

B. The turbo engine includes a compressor exhaust system for controlling the airflow through the engine, a cooling air system for engine icing, and an engine starting system.

C. The turbine engines include compressor bleed systems used to control flow of air through the engine, cooling air systems, heated air systems for engine anti-icing, and engine starting systems.