To prevent unwanted friction, polish the surface.

A. 确保设备测量值与燃油箱的实际油量一致。

B. 确保表显数值与油箱加油量一致。

C. 确保仪表指示与油箱油量一致。

A. The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.

B. The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.

C. The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.

A. Code is useless to identify the cables.

B. Put a code on the cables to identify them.

C. A tag should be attached to the cables.

A. 应该提供手册中使用的符号、缩略语和术语的定义或解释。

B. 应该定义并解释符号，并提供手册中术语和缩略语的使用方法。

C. 应该用手册来定义和解释符号，缩略语，术语的使用。

A. 隔离液压系统之前，做勤务。

B. 在勤务液压系统之前，将其隔离。

C. 在增压液压系统之前，先将其隔离。

A. 系统中用来生成电流点燃燃烧室和加力燃烧室中油气混合气的那部分。

B. 系统中产生电流以点燃燃烧变大器和推力增大器中的燃料混合物的部分。

C. 系统中产生电流以点燃燃烧变大器和推力缩小器中的燃料混合物的部分。

A. 故障隔离手册提供的信息可以用来标识、定位和纠正可能在飞机上发生的任何故障。

B. 故障隔离手册提供信息用于标识、定位和修正已经在飞机上发生的任何故障的信息。

C. 飞机上出现的任何故障信息都可以参照故障隔离手册提供的标识来定位并排故。

A. AD describes corrective action, e.g. inspection, repair or maintenance, which may be listed by AD or included in another document, e.g. manufacturer＇s Service Bulletin that acts as reference in the AD.

B. The corrective action prescribed by the AD, such as an inspection, repair, or modification, may be detailed in the AD itself or may be contained in another document, such as manufacturer＇s Service Bulletin, which is referenced in the AD.

C. AD details the requirements for inspection, repair or modification described in corrective action, or it may be contained in another document, such as Service Bulletin referenced in AD.

A. Mixed category consists of many parts and components, five kinds of these parts have been selected.

B. Miscellaneous category consists of many parts and components, five kinds of these parts have been selected.

C. Complicated category consists of many parts and components, five kinds of these parts have been selected.

A. ATA chapter is indicated by a pair of the digits of the first fault code.

B. ATA chapter is indicated by latest pair of the digits of the fault code.

C. The first pair of the digits of fault code indicates the applicable ATA chapter.