Cracks can have a maximum length of five inches.

A. 校正空速是指经过位置调整以及仪表调整后的指示空速。

B. 校准空速指修正了仪表误差和位置误差之后得到的指示空速。

C. 校准空速是指调节位置误差以及仪表误差后的指示空速。

A. When simulating altitude, make sure you have alternate ATC transponders in active mode.

B. Make sure that the ATC transponders are in standby mode when you simulate altitude.

C. It is optional to keep the ATC transponders in ready mode during altitude simulation.

A. The total weight must be approved and the CG shall be within the limits.

B. The total weight and CG must be within the specified range.

C. Totals must be within approved weight and CG limits.

A. Make sure that the cables are bent.

B. Make sure that there is tension in the cables.

C. Make sure that there are twists in the cables.

A. 更换滑阀，确保其表面光滑。

B. 如果滑阀表面粗糙，则将其更换。

C. 如果活门表面粗糙，则更换其滑动桶。

A. Put a plug on the open end of each pipe.

B. On the opening of each pipe, put a cover.

C. Put a cover on the loose end of the pipe.

A. The main gear doors are pneumatically sequenced to remain open while the gear is extending or retracting.

B. The main gear doors are hydraulically sequenced to remain open while the gear is extending or retracting.

C. The main gear doors are automatically sequenced to remain open while the gear is extending or retracting.

A. 如果无法听到警告声，需调整音量控制器。

B. 调整音量控制器可能导致警告声过于响亮。

C. 调整音量控制器可能使警告声变得更加嘈杂。

A. 把调查结果写在改进表上。

B. 把试验结果写在测试表上。

C. 把校准结果写在校正表上。

A. 每一页的下方应该添加页面编号和分发或改版日期。

B. 每一页的底部应该具有页码和发布或修订日期。

C. 每一页应该在末行加粗页码和印刷或更新的日期。