A. Schematic diagrams may be used to indicate "flow" and to illustrate the operation of systems such as air control, electrical, fluid power, fuel and turbosystems.

B. Principle charts can be intended to show "flow" and explain the operation of systems as well as air control, electrical, hydraulic power, fuel and turbine systems.

C. Schematic diagrams can be employed to show "flow" and to explain the operation of systems along with air control, electrical, fluid power, fuel and turbosystems.

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Fireseals are those fire-resistant partitions and seals mounted on or about the power package for the purpose of isolating areas subject to fire.

A. 防火密封是安装在动力装置上或动力装置周围的耐火隔断或耐火密封，目的是隔离着火区域。

B. 防火密封是根据着火类别而安装在动力装置或动力装置周围的耐火隔板或耐火密封件，以隔离着火区域。

C. 防火密封指那些安装在动力装置或动力装置周围部件上的防火部件和密封材料，它们能在失火时隔离相关区域。

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如果过滤器发生堵塞，应送去实验室分析污染情况。

A. If the filters become clogged, send them to the laboratory for analysis of the contamination.

B. If the filters are surged, send them to laboratory for contamination analysis.

C. If the contaminant is blocking the filter, the material should be sent to the laboratory for analysis.

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This method is recommended as minimizing errors of distribution, and also informs owners of the availability of systems and equipment.

A. 为了减少分配误差，推荐使用该方法，同时将系统和设备的功能特性告知所有者。

B. 为使辨别时产生的误差最小化，推荐使用该方法，同时对所有者说明系统和设备的使用方式。

C. 建议采用该方法，以最大程度地减少分配出错，同时使所有者获知系统和设备的可用性。

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当节或子系统单元编号后面的主题单元编号(28-20-00)为零时，该信息适用于系统内的子系统。

A. When the section or subsystem element number is followed with zeros in the subject element number (28-20-00) , the information is applicable to subsystems within the system.

B. This information applies to subsystems of the system when the topic number (28-20-00) following the section or subsystem part number is zero.

C. This information is suitable to subsystems in the system when the topic unit number (28-20-00) is followed by the section or subsystem unit number with zeros.

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很难确定腐蚀的影响，但是如果收到持续适航大纲检查报告，检查时间将根据任何严重的问题进行调整。

A. It is very difficult to determine the effects of corrosion but, as the reports from the CAP inspections are received, the inspection times will be adjusted for any severe problems.

B. It is not easy to decide the affection of corrosion, when the reports from the CAP inspections are received, the inspection duration will be changed for any serious problems.

C. It is very hard to make the decision of the corrosion effects but, if the reports from the CAP inspections are obtained, the inspection times will be arranged in accordance with the severest problem.

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Make sure that the hydraulic fluid is clean.

A. Make sure that the hydraulic oil can be cleaned.

B. Make sure that there is no dust in the hydraulic fluid.

C. Make sure that the hydraulic fluid is uncontaminated.

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The airplane fuel system supplies pressurized fuel from the center or main tank.

A. 飞机燃油系统从中央或主油箱提供增压的燃油。

B. 飞机燃油供应系统给来自中央或主油箱的燃油增压。

C. 飞机燃油系统提供燃油，这些燃油是从中央或主油箱增压的。

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