Make sure that you do not cut the control cable.

A. 附录应显示系统数据所在的章或子章。

B. 目录应显示章或子章以及系统路径所在的位置。

C. 索引应显示系统电路所在的章或子章。

A. 断开刹车系统，操纵手摇泵手柄通过全行程。

B. 给刹车系统排气，然后全行程操纵手摇泵的手柄。

C. 全行程操纵手摇泵的手柄给刹车系统放气。

A. 警告：关闭舱口前，确保机组休息室中没有人员。舱口关闭时，舱室没有气流，存在中毒的风险。

B. 警告：关闭舱门前，确保机组休息室中没有人员。舱口关闭时，舱室没有气流，存在窒息的风险。

C. 警告：关闭门栓前，确保机组休息室中没有人员。舱口关闭时，舱室没有气流，存在缺氧的风险。

A. You can use the past form of technical verbs as adjectives.

B. You can use the past tense form of technical verbs as adverbs.

C. You can use the past participle of technical verbs as adjectives.

A. 扩孔（铰孔）至直径达到8.00+/-0.003毫米。

B. 钻孔至半径达到8.00+/-0.003毫米。

C. 钻孔至直径达到8.00+/-0.003微米。

A. 那些说明可以作为定期维修所必需的参考。

B. 那些指令是执行定期维护所必需的。

C. 这些指示必须进行有计划维修。

A. The equipment refrigeration system exchanges the key equipment cabinets and the equipment in the compartment.

B. The equipment cooling system removes heat from the equipment in the main equipment center and the flight compartment.

C. The equipment exchange system removes heat from the lower equipment center and the aft cargo compartment.

A. Visual difference is acceptable between the previous surface and the new surface.

B. There should be no visual difference between the initial surface finish and the new surface finish.

C. It is forbidden to have acoustic difference between the former surface finish and the new surface finish.

A. It includes cardinal rigging dimensions used in checking damaged aircraft or aircraft undergoing major repair .

B. It includes the basic rigging dimensions for inspection of damaged aircraft or aircraft is undergoing major repairs.

C. Basic rigging dimensions for inspection of damaged aircraft or aircraft experienced major repairs should be included.

A. 中心句是一篇文章的第一句，也是最重要的一句。

B. 总结句是一节内容的第一句，也是最重要的一句。

C. 主题句是一段话的第一句，也是最重要的一句。