To facilitate troubleshooting, repair of circuits, and replacement of components, an identification and coding system should be used.

A. 如果没有必需的修理程序，仔细检查燃油渗漏来确保不会渗漏更多。

B. 没有必须的维修程序。检查燃油使用频率确保使用量不会变大。

C. 无需执行修理程序。经常检查燃油渗漏情况，确认区域没有扩大。

A. 21章指随飞机提供的供应商数据，以填充以下 -00 至 70 节（如适用）。

B. 21章可参考随飞机提供的供应商数据，来填充以下 -00 至 70 节（如适用）。

C. 21章可以指随飞机提供的供应商数据，按照从-00 至 70 节的顺序（如适用）。

A. This Specification was issued by the General Aviation Manufacturers Association

B. This Specification was revised by the General Aviation Manufacturers Association

C. This Specification was compiled by the General Aviation Manufacturers Association

A. 门是由基础复合材料增强塑料制成的。

B. 门是由碳纤维复合塑料制成的。

C. 门是由碳纤维增强塑料制成的。

A. It includes items such as audio selector control panel, microphones, head­ phones, cockpit loud speakers, etc.

B. It includes items such as automatic selector control panel, interphones, head­ phones, cockpit loud speakers, etc.

C. It includes items such as audio selector control panel, microphones, head­ phones, cockpit speakers, etc.

A. See the graphics for information of the solenoid valves which shall contain a note indicating the position of the valve (whether spring-loaded to its open or closed position).

B. Solenoid valves indicated on the schematic shall have a notation indicating when the valve shall be spring-loaded to the open or closed position.

C. Solenoid valves shall be indicated on the schematic and shall include a notation indicating whether the valve is spring-loaded to the open or closed position.

A. Air filter needs to be replaced on regular maintenance schedule, because it often causes low flow through the equipment cooling supply system. Quickly release the tabs on the air filter housing cover to reach the filters.

B. Low flow through the equipment cooling supply system is caused by a contaminated air filter, therefore regular replacement is necessary, release the quick release tabs on the air filter housing cover to approach to the filters.

C. A blocked air filter which causes low flow through the equipment cooling supply system needs replacement on a regular maintenance schedule. Release the quick release tabs on the air filter housing cover to reach the filters.

A. 形容词给出了原形，在括号中给出了同义词和反义词。

B. 形容词给出了原形，在括号中给出了反义词和最高级。

C. 形容词给出了原形，在括号中给出了比较级和最高级。

A. 确保夹钳的位置与您在拆卸过程中记录的位置一致。

B. 确保夹钳的位置与您在拆卸过程中的位置齐平。

C. 确保夹钳的方向与您在拆卸过程中的方向一致。

A. You may use alerts and cautions to emphasize some important places.

B. The important parts must be highlighted by using the warnings, cautions and notes.

C. Warnings, cautions and notes may be used to highlight or emphasize important points.