The ratio of width to depth must be 30 or more at each point.

A. Too much force can cause damage to the sealing components.

B. Excessive force may damage the seal.

C. Too much force can cause damage to the contact surface.

A. 把前侧或后侧座椅移动大约0.50英寸（12.70毫米）使座椅滑轨接头上的凸缘与座椅滑轨里的孔对齐。

B. 向前或后移动座椅大约0.50英寸（12.70毫米）使座椅滑轨接头上的凸缘与座椅滑轨里的孔对齐。

C. 把前侧或后侧座椅移动大约0.50英寸（12.70毫米）使座椅滑轨接头上与座椅滑轨里的孔对齐。

A. 我们的目的是提供持续的、满足工业标准的持续适航标准。

B. 我们的目的是提供一致的、行业标准化的持续适航方案。

C. 我们的任务是提供完整的、行业标准的持续适航计划。

A. 一台发动机可以为所有系统供电。

B. 一台发电机可以为所有系统供电。

C. 一台动力装置可以为所有系统供电。

A. 记录对蒙皮表面进行的所有修理。

B. 记录对蒙皮封严进行的所有修理。

C. 记录对蒙皮损伤进行的所有处理。

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. The lower seal is invisible prior to switching the lower bearing on.

B. The lower seal becomes visible when you push the lower bearing up.

C. The lower seal comes into view when you pull the lower bearing down.

A. Based on different airplane design, the Emergency Procedures and other pertinent information necessary for safe operation should only be provided for some airplane.

B. Based on the particular airplane design, operating or handling distinguishing feature, Emergency Procedures and related information must be provided.

C. The Emergency Procedures and other special information necessary for safe operation shall be provided for emergencies that is common to all airplane design, operating or handling characteristics.

A. System test is normally used at minor maintenance time.

B. System test is usually done during maintenance and repairs.

C. System test is normally used at major maintenance periods.