2666. 把电器接头5和9连到活门上。

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. Make sure that the service control unit is in the open position.

B. Make sure that the servo control unit is in the right position.

C. Make sure that the servo control unit is in the open position.

A. This tool is mandatory.

B. This tool is optional.

C. This tool is necessary.

A. 接通断路器。

B. 打开电路接头。

C. 拔出跳开关。

A. If there is no respond from the tower, select a different frequency and contact again.

B. If there is not any answer from the tower, use a different tunnel.

C. If the tower does not respond, use a different radio device.

A. Try to move the control column.

B. Move the control column momentarily.

C. Try to move the control column forward.

A. 确保客舱内的压力几乎为零 。

B. 确保客舱内外的压差几乎为零。

C. 确保客舱的压力变化率几乎为零。

A. Do the troubleshooting procedure to find the cause of the malfunction

B. Do the troubleshooting procedure to look the result of the malfunction

C. Find the cause of the malfunction to do the troubleshooting procedure

A. Unscheduled maintenance are those maintenance checks and inspections on the aircraft,its systems and units which are recognized by the manufacturer as special or unusual conditions which are not related to the time limits specified in-10 above.

B. For the unscheduled maintenance checks and inspections of aircraft,aircraft systems and components,the manufacturer shall not include special or unusual conditions from the time limits specified in-10.

C. If the unscheduled maintenance checks and inspections on the aircraft,its systems and units are special or unusual conditions,the time limits specified in-10 shall be referred to by the manufacturers.

A. Attitude indicator indicates attitude

B. Altitude indicator indicates attitude

C. Attitude indicator indicates altitude