He removed the access panel to see the corroded tube.

Be careful when you use consumable materials.

A. 使用耗材时要小心。

B. 小心使用易燃品。

C. 使用化学材料要小心。

Inspection of the lavatory rapid-decompression device.

A. 检查厕所快速增压装置。

B. 检查厕所快速减压装置。

C. 检查厕所定期减压装置。

描述飞机发动机时，应描述点火系统。

A. When describing the airplane＇s Engine, spark plug system shall be described.

B. When describing the airplane＇s Engine, starter system shall be described.

C. In the description of the airplane＇s Engine, ignition system shall be described.

All flow control devices within the system, such as check valves, fuel pumps, accumulators, and relays should be included and indicated. Solenoid valves shall be indicated as such and shall include a notation indicating whether the valve is spring-loaded to the open or closed position. Once a symbol or device is established for a valve or control, it shall be used for this type of unit throughout the manual. The symbols used should be shown and identified in a legend block on the schematic diagram.

A. 系统内的所有流量控制装置，如止回阀、燃油泵、蓄能器和继电器都应包括在内。电磁阀应标明，并应包括一个说明，表明该阀是由弹簧加载到打开或关闭位置。一旦为阀门或控制装置确定了一个符号或装置，它应在整个手册中用于该类型的装置。所用的符号应在原理图的图例块中显示和标识。

B. 系统流程图应对该系统内的所有流量控制装置进行标识，如单向活门、燃油泵、蓄压器和继电器。电磁阀门也应标识，并以注释形式说明该阀门是否使用弹簧加载在开位或关位。一旦确定了各阀门和控制器对应的符号，则应在整个手册中保持一致。

C. 系统内的所有流量控制装置，如止回阀、燃油泵、蓄能器和继电器，都应包括在内并标明。电磁阀应按此指示，并应包括一个符号，指示阀门是弹簧加载到打开位置还是关闭位置。一旦为阀门或控制装置建立了符号或装置，则应在整个手册中将其用于此类装置。所使用的符号应在原理图上的图例块中显示和标识。

If the microswitch becomes unserviceable, do the deactivation procedure of the actuator to prevent damage to the valve.

A. If the microswitch becomes unserviceable, proceed with the actuator activation procedure to damage the valve.

B. When the microswitch is functional, ensure the deactivation procedure of the actuator is performed to avoid any harm to the valve.

C. If the microswitch malfunctions, execute the actuator deactivation procedure to protect the valve from harm.

Remove the caps from the hoses.

A. Keep the caps off the hoses.

B. Make sure the caps are off from the hoses.

C. Take the caps off the flexible pipe.

下滑道路径是与跑道的端头成一个固定的角度。

A. The glideslope path is at a constant angle to the threshold of the runway.

B. The glideslope path is at a variable angle to the first end of the runway.

C. The vertical course path is at a fixed angle to the threshold of the runway.

以下首字母缩略词在本节中可互换使用，它们分别代表同一系统和设备。

A. The following synonyms are used interchangeably throughout this section and they are the sample of one system and device respectively.

B. The following antonyms are used interchangeably throughout this section and they present the same system and device partly.

C. The following acronyms are used interchangeably throughout this section and they represent the same system and device respectively.

There are four general classes of fasteners.

A. There are only four kinds of fasteners.

B. Fasteners is generally divided into four types.

C. We classify the fasteners through four dimensions in general.

豁免许可申请者必须说明该豁免批准不会影响安全的理由，或者必须说明申请者要采取的措施以确保所提供的安全水平与寻求豁免的条例所提供的安全水平是等效的。

A. The applicant for an avoidance permit must show that the approval of the avoidance permit will not affect safety and must provide an explanation. The applicant shall take measures to ensure that the level of safety is equal to the level of safety provided

B. The petitioner for an exemption must include reasons why safety would not be adversely affected if the exemption is granted, or must explain the action to be taken by the petitioner to provide a level of safety equal to that provided by the rule from whic

C. The applicant for an exemption permit must state the reasons why safety will not be affected by the granted approval, or must take measures to ensure that the level of safety provided is consistent with the requirements of the regulations seeking exemptio