721. 在两个副翼后部有调整片。

A. The airplane has been repaired in agreement with ABC suggestions or equivalent.

B. The airplane has been maintained in accordance with ABC recommendations or equivalent.

C. The airplane has been checked in line with ABC suggestions or equivalent.

A. 当你顶升或者放下飞机时,必须保持水平姿态。

B. 当你顶升或者放下飞机时,必须保持水平高度。

C. 当你顶升飞机时,必须保持水平高度。

A. Make sure the ground proximity warning system is can operate

B. Make sure the ground approaching alerting system is can operate

C. Make sure the ground proximately warning system is can operate

A. 当动力源(电动,气动或液压)为单个部件提供服务或为单个功能系统提供服务时,该动力源将包含在其所服务的部件或系统中讨论。

B. 当动力源(电动,气动或液压)为不同的部件提供服务或为不同的功能系统提供服务时,该动力源将包含在其所服务的部件或系统中讨论。

C. 当动力源(电动,气动或液压)为单个部件提供服务或为单个功能系统提供服务时,该动力源将包含在其所服务的部件和系统中讨论。

A. Where a low flow or undercooling condition occurs, the low flow sensor sends an alarm signal to the flight compartment for warning.

B. When a low flow or not sufficient cooling condition occurs, the low flow sensor supplies an alarm signal to the flight compartment for annunciation.

C. When a low flow or insufficient cooling condition occurs, the low flow sensor applies a alarm signal to the flight compartment for caution.

A. 给装有泵的系统B提供液压

B. 给系统B和泵提供液压

C. 用泵给系统B提供液压

A. 顺时针方向转动螺栓。

B. 顺时针方向转动盖子。

C. 逆时针方向转动盖子。

A. Three computers collect data and parameters from the systems and put them together on the data link to the display unit;

B. Three computers gather data and parameters from the systems and put them together on the data link to the display unit;

C. Three Components collect data and parameters from the systems and put them together on the data link to the display unit;

A. When the cross-feed system is open, it is possible for one fuel pump to supply fuel to the two engines

B. When the supplying system is open, it is possible for one fuel pump to supply fuel to the two engines.

C. One fuel pump can supply fuel to two engines, as the supplying system is open.

A. 跳开关安装在组件的前部。

B. 跳开关位于组件侧面。

C. 跳开关安装在组件的后部。