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.

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Only approved personnel must operate the brakes.

A. 授权人员必须仅操作刹车。

B. 务必仅由授权人员操作刹车。

C. 授权人员只能按要求操作刹车。

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This procedure is applicable only in digital mode.

A. This procedure is only void in digital mode.

B. This procedure is only valid in digital mode.

C. This procedure is only ineffective in digital mode.

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这个舱内有一些电子设备。

A. This compartment includes some of the electrical equipment.

B. This cabin has some of the electromotive equipment.

C. This bay contains some of the electronic equipment.

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此方案通常由两页组成：一个文字页和一个图片页。

A. This Program usually includes two pages: one writing page and one drawing page.

B. This Program usually contains two pages: one test page and one image page.

C. This Program usually consists of two pages: one text page and one illustration page.

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The manufacturer＇s masthead, publication title, airplane model, and issue or revision date must appear on all pages of loose-leaf document.

A. 发行人栏目，出版物名称，飞机型号和发行或修订日期都应该出现在活页文件页面中。

B. 制造商的刊头、出版物标题、飞机型号和发行或修订日期必须出现在活页文件的所有页面上。

C. 生产商发行人栏目，出版物名称，飞机类型和发布或修订日期都应该出现在活页文件所有页面中。

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许多读者的英语知识有限,复杂的句子结构和许多英语单词所具有的大量的意义和同义词会引起混淆。

A. Many readers have little knowledge of English. Complex sentence structure and the large number of meanings and antonyms that many English words have can cause misconception.

B. Many readers have a limited knowledge of English. Complex sentence structure and the large number of meanings and synonyms that many English words have can cause confusion.

C. Many readers have a little knowledge of English. Complex sentence structure and the large number of meanings and homonyms that many English words have can cause frustration.

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The metering plug decreases the fuel flow.

A. 计量塞增加燃油量。

B. 计量塞改变滑油流量。

C. 计量塞减少燃油流量。

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方向舵被用于偏航控制。

A. The elevator is used for yaw control.

B. The rudder is used for yaw control.

C. The rudder is used for pitch control.

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在批准例子中的词并不是强制性的。