Drains let fuel in the vent system return to the tanks.

A. Visually check the forward engine mount to the fan frame bolts if they are correctly installed and damaged.

B. Do a visual check of the bolts which attach the forward engine mount to the fan frame for the correct installation and damage.

C. Visually check the correct installation and damage of the forward engine mount to the fan frame bolts.

A. The vendor can build programs to supply response to worthless conditions found in compliance with regulations.

B. The manufacturer may establish procedures to provide feedback on unairworthy conditions that were discovered when complying.

C. The manufacturer may create a process to give feedback on abnormal conditions when it＇s conformed.

A. If you don＇t do the OVHT/FIRE test, there is no indication of single loop operation in the flight compartment.

B. If you don＇t do the OVHT/FIRE test, the flight compartment has no single loop operation.

C. No indication of single loop operation in the flight compartment as you do the OVHT/FIRE test.

A. The wing tanks and the center tank have the same rate of supply of fuel.

B. The rate of supply of fuel from the wing tanks to the center tank is equal.

C. The fuel supply rate from all wing tanks and the center tank is the same.

A. 安装此组件需要专用工具。

B. 对于安装此组件来说批准的工具是必须的。

C. 专业工具对安装此组件是无所谓的。

A. “检查程序”用于列出要使用的检查程序，如磁性粒子、目视检查等，也可参考其他文件（如《无损检测手册》）中包含的程序。

B. “检查程序”用于规定要使用的检查程序，如磁粉检查、目视检查等，也可指向其他文件（如《无损检测手册》）中包含的程序。

C. “检查程序”用于规定要使用的检查程序，如磁粉检查、目视检查等，并可寻找另一个文件的实际程序，如无损检测手册。

A. Be patient while the door is opening.

B. Be aware of the door when it is opening.

C. Be careful while the door is opening.

A. The airworthiness section may recommend each expected replacement time.

B. The replacement time must be set forth in part of airworthiness section.

C. Airworthiness section must set forth each mandatory replacement time.

A. Magnetic tools have an unwanted effect on the compass system.

B. Metallic tools are of positive effect on the compass system.

C. Magnets can affect the compass system adversely.

A. 描述飞机飞行仪表系统时，应说明查看其正常工作的方式以及识别失效的方式。

B. 描述飞机飞行仪表系统时，应说明如何检查其是否正常运行以及如何识别故障。

C. 描述飞机飞行仪表系统时，应说明检查其正常运行的方式以及识别障碍的方式。