单选题句子形式应该简单直接，除对实际理解和应用有必要外，省略对理论的讨论。

A、 Sentence forms shall be simple and direct ,omitting discussions of theory except where essential for practical understanding and application.

B、 The sentence form should be easy and direct, avoiding discussion of theory except when practical understanding and application are necessary.

C、 The form of a sentence should be simple and direct, and the discussion of theory should be omitted in addition to practical understanding and application.

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单选题喷气式发动机的基本原理很简单，其结构也非常简单。

A、Not only the basic principle of the reciprocating engine is simple, and also the assembly.

B、The basic principle of a jet engine is simple, and so is its construction.

C、The basic principle of the propeller driven engine is simple, as well as the installation.

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单选题空气涡轮机启动器的故障会触发发动机过热和火警信号。

A、Failure of the air turbine starter can trigger the engine overheat and fire indications.

B、The air turbine starter fails to trigger the engine overheat and fire indications.

C、Failure of the air turbine starter can cause the engine overheat and fire indications.

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单选题语音记录器组件的外壳具有以下特性：防水，耐冲击和耐热。

A、The housing for the voice recorder unit has these properties: water tolerance, shock resistant and heat resistant.

B、The container for the voice recorder unit has these properties: watertproof, spin resistant and heat resistant.

C、The container for the voice recorder unit has these properties: watertight, shock resistant and heat resistant.

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单选题如果飞机停在斜坡上，请确保放好轮挡处。

A、If the aircraft is parked on the ground, make sure that wheel chocks are placed.

B、If the aircraft is parked on the ground, make sure that wheel chocks are in position.

C、If the aircraft is parked on a slope, make sure that wheel chocks are in position.

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单选题升降舵的行程受升降舵动力控制组件的行程限制。

A、Elevator move is limited by the move of the elevator power control units.

B、Elevator trip is limited by the move of the elevator power control units.

C、Elevator travel is limited by the stroke of the elevator power control units.

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单选题在更正栏中，列出部件故障纠正措施涉及的所有注意事项或要点。

A、In the correction column, list any notes or key points involved in correcting the trouble in the unit.

B、List any notes or key points involved in corrective actions for units faults during correction.

C、List all corrective actions, any notes or key points related to a unit failure when you do the Correction.

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单选题不在存储器中的频率调谐时间通常为2到4秒，最大为7秒。

A、The tune time for a frequency not in memory is 2 to 4 seconds typical, 7 seconds maximum.

B、The adjust time for a frequency not in memory is 2 to 4 seconds typical, 7 seconds maximum.

C、The tune time for a frequency not in memory is 2 to 4 seconds common, 7 seconds maximum.

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单选题然而，制造商可能会省略不适用于该产品的系统/章，或者在可行的情况下合并系统/章。

A、However, manufacturers may omit System/Chapters that are not applicable to the product or combine Systems/Chapters where it is feasible.

B、However, manufacturers may adopt Systems/Chapters that are not applicable to the product or constitute Systems/Chapters when necessary.

C、However, operators may omit Systems/Chapters applicable to the product or constitute Systems/Chapters where practical.

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单选题 句子形式应该简单直接，除对实际理解和应用有必要外，省略对理论的讨论。

单选题句子形式应该简单直接，除对实际理解和应用有必要外，省略对理论的讨论。