2490. The servo fuel heater attaches to the engine oil/fuel heat exchanger

A. 对于标准和选装的发动机和螺旋桨装置以及燃油和滑油系统,应提供描述性数据。

B. 参考数据应包活标准和可用发动机和螺旋桨设备以及燃油和滑油系统。

C. 系统数据必须涵盖常规和可用发动机和螺旋桨装置以及燃油和润滑油系统。

A. Pass the cablethrough the pulley

B. Pass the cablethrough the turnbuckle

C. Pass the cablethrough the quadrant

A. 一般而言,当手册受影响引起总页数变化时,应进行改版。

B. 一般而言,当受影响的手册的总页数较少时,应进行修订。

C. 一般而言,修订后的手册对总页数的影响要尽可能的小。

A. Main frame: including compartment, bulkhead, firewall, beam, keel, exterior opening of compartment, etc.

B. Main Frame: Includes items such as frames, bulkheads , firewalls, stringers, keel, frames around openings, etc.

C. Main frame: including compartment, bulkhead, firewall, beam, keel, opening inside compartment, etc.

A. If the micro switch stops working, deactivate the procedure of the actuator to avoid the valve damage.

B. If the micro switch becomes unserviceable, do the activation procedure of the actuator to prevent damage to the valve.

C. Do the activation procedure of the actuator to prevent damage to the valve, unless the micro switch becomes unserviceable.

A. 给多个用电系统服务的电缆、导管、插头、插座等,并且这些电缆、导管、插头、插座是捆绑在一起的,以便于拆卸和安装。不包括在另一个系统中特别涵盖的导线。

B. 给多个用电系统服务的电缆、导管、插头、插座等,但这些电缆、导管、插头、插座是捆绑在一起的,以便于拆卸和安装。不包括在另一个系统中特别涵盖的导线。

C. 给多个用电系统服务的电缆、导管、插头、插座等,但这些电缆、导管、插头、插座是捆绑在一起的,以便于拆卸和安装。还包括在另一个系统中特别涵盖的导线。

A. Maintenance information need to be continually updated.

B. Maintenance information needs to be continually updated.

C. Maintenance data need to be continually updated.

A. By using the basic provisions of FAR 21.50, revisions become consistent with the format of the specification.

B. FAR 21.50 provisions are the basis to the revisions which are consistent with the format of the specification.

C. To make revisions consitent with the format of the specification, the provions of FAR 21.50 should be adopted as a basis.

A. 在机身排水孔、管道或通道附近或周围涂抹润滑剂时,请勿造成堵塞。排水孔的功能是将冷凝水和流体排出机外。

B. 在机身排水孔、管道或通道附近或周围涂抹密封剂时,请勿造成堵塞。排水孔的功能是将冷凝水和流体排出机外。

C. 在机翼排水孔、管道或通道附近或周围涂抹密封剂时,请勿造成堵塞。排水孔的功能是将冷凝水和流体排出机外。

A. 不要加注过量燃油。

B. 不要使用未知性能的燃油。

C. 不要使用性能未知的油液。