251. LET THE DIAL BECOME STABLE BEFORE YOU( ) THE INDICATIONS

A. Make sure that the oil in the hydraulic tank is above the minimum lever.

B. Make sure that the fluid in the hydraulic reservoir is above the minimum level.

C. Make sure that the fluid in the fuel reservoir is below the maximum level.

A. Among the offices under the Associate Administrator is the Aircraft Certification Service, which has the responsibility for overseeing the Aircraft Certification Directorate, and the is Washington Headquarters operations related design, production, and airworthiness certification.

B. Aircraft Certification Directorate which is one of the offices under the Associate Administrator is responsible for overseeing the Aircraft Certification Directorate, and the Washington Headquarters operations related to design production, and airworthiness certification.

C. Overseeing the Aircraft Certification Directorate, and the Washington Headquarters operations related to design, production, and approval is the duty of Aircraft Certification Service that is among the offices under the Associate Administrator.

A. 组件延伸至壳体,安装并连接在通信控制组件上。

B. 组件延伸至壳体组件,并与伸缩控制组件相连。

C. 组件延伸至壳体组件,并与通讯控制组件相连。

A. 在飞行舱的控制允许选择温度和流速。

B. 驾驶舱的控制允许选择温度和流动方向。

C. 驾驶舱的控制允许选择温度和流速。

A. Personal safety precautions: Warnings regarding steps in where personnel, the work, or equipment can be damaged.

B. Personal safety precautions: Cautions regarding steps in which personnel, the work, or equipment can be damaged.

C. Personal safety precautions: Cautions for steps that must be damage to personnel, work or equipment.

A. 如果不正确跟进操作程序、检查、修理或维护程序,可能导致人员受伤。

B. 如果没有紧跟操作程序、检查、修理或维护程序,可能导致人员伤亡。

C. 如果不正确遵循操作程序、检查、修理或维护程序,可能导致人员伤亡。

A. MAKE SURE THAT THE CABLES not twist

B. MAKE SURE THAT THE wine not twist

C. Make sure that the levers are not fouled by the cables.

A. The slats shall be retracted to ensure that the aileron trim hand wheel is in the initial position.

B. Be sure to retract the flaps and keep the rudder trim hand wheel in the original position.

C. Make sure that the flaps are retracted and the aileron trim handwheel is in the zero position.

A. Open valve to admit nitrogen to the drag strut

B. Open the valve and allow nitrogen to enter the oleo strut

C. Open the valve to let nitrogen go into the shock strut

A. CAP一般分为两部分:一部分是文字,另一部分是示意图

B. CAP通常包括两页:一页文本和一页示意图

C. CAP包括两种:一种文字表示的,一种是示意图