涂三层底漆。

A. 有两种方法来固定圆形螺栓。

B. 有两种方法将环形螺母放到蝶形盘上。

C. 有两种方法来固定环形螺母。

A. A wing anti-ice L VALVE OPEN or R VALVE OPEN light stays illuminated dim blue. The wing anti-ice valve is not in the ordered position.

B. A wing anti-ice L VALVE OPEN or R VALVE OPEN light stays illuminated bright blue. The wing anti-ice valve is not in the commanded position.

C. A wing anti-ice L VALVE OPEN or R VALVE OPEN light stays illuminated dim blue. The wing anti-ice valve is not in the preferred position.

A. The autopilot has reached its roll authority limit due to an airplane roll or yaw asymmetry.

B. The autopilot has been out of its roll authority limit due to an airplane roll or yaw symmetry.

C. The autopilot has reached its yaw authority limit due to an airplane roll or yaw imbalance.

A. Make sure that the cabin differential pressure is zero before you unlock the door.

B. Be sure that the variance of the cabin pressure is zero before you open the door.

C. Make certain that the difference of the compartment compression is zero before you open the door.

A. APU start attempts are inhibited above 25,000 feet with both busses off, only one start attempt is allowed below 25000 feet.

B. With both busses power off, APU start attempts is recommended above 25000 feet and only one start could be accepted below 25,000 feet.

C. APU start attempts are not recommended above 25,000 feet. With both busses off, only one start attempt is recommended below 25,000 feet.

A. 如果危险被含糊描述，人员在执行任务时要了解风险，并更加小心。

B. 危险是否被清楚说明，以致于执行任务的人是否有必要了解风险，并更加小心。

C. 如果清楚说明了危险，执行任务的人就会了解风险，且更加小心。

A. This section includes all the limits of the optional systems and equipment.

B. Limitations related to optional systems may be contained in this section.

C. Only the limitations which are relevant to optional systems might be including in this section.

A. 26章题目是防火系统，写的是固定和便携式的用来探测和指示飞机内的火焰或烟雾，存储和向所有受保护区域分配灭火剂的装置和部件。如果灭火瓶、活门、管子等属于制造商指定的标准设备，则它们也包含在这章中。

B. 26章题目是防火系统，写的是固定和便携式的的装置和部件，用来探测和指示飞机内的火焰或烟雾，存储和分配灭火剂到所有受保护区域，如灭火瓶、活门、管子等，如果其属于制造商指定的标准设备。

C. 26章题目是防火系统，写的是固定和便携式的用来探测和指示飞机内的火焰或烟雾，存储和向所有受保护区域喷洒灭火剂的装置和部件。如果灭火瓶、活门、管子等属于制造商设计的标准设备，则它们也包含在这章中。

A. 本规范涉及FAA的各种调节。

B. 本规范参考了各种FAA条例。

C. 本规范称作FAA的各种规章。

A. It is important that the correct sequence of assembly is used when doing a repair, this will make sure that all parts are correctly aligned.

B. It is important to assemble the parts in a correct order during a repair which makes sure all parts correctly aligned.

C. When doing a repair, the correct sequence of assembly is important, which will make sure that all parts are correctly engaged.