从软管上拆下盖子。

A. Obey the safety precautions when you do work with high voltages.

B. When working with high resistances, you should follow the safety precautions.

C. The safety precautions are optional in an environment with high voltages.

A. 拧紧松紧螺套，直到钢索达到合适的张力。

B. 松开再拧紧螺套，直到钢索有适当的张力。

C. 旋转螺套，确保钢索处于正确的位置。

A. As necessary, use the applicable SAFETY BARRIERS, classified by the operator＇s instructions and your local regulations. These communications are subjected to atmospheric interference and difficult to understand.

B. Use the applicable SAFETY BARRIERS, specified by the operator＇s instructions and your local regulations if necessary. These communications are affected by the atmosphere and difficult to understand.

C. Use the applicable SAFETY BARRIERS, classified by the operator＇s instructions and your local regulations if necessary. These communications are subjected to atmospheric interference and difficult to understand.

A. 检查盒子里有无丢失的东西。

B. 检查盒子里内有无遗漏物品。

C. 为了找到丢失的东西需要检查盒子。

A. 感应管内的气压使有故障的压力电门处于关闭位置。当该气压在过热或火警状况时，其它2个压力电门关闭。

B. 感应管内的气压保持故障压力电门处于关闭位置。当该气压由于过热或火警状况增加时，其它2个压力电门关闭。

C. 气压在感应管内保持不变,故障压力电门处于关闭位置。其它2个压力电门关闭时，气压出现过热或者火警情况。

A. 始终遵守如下保持电线处于良好状况的法规。

B. 始终遵守预防措施，然后保持电线处于良好状况。

C. 始终遵守如下预防措施以保持电线处于良好状况。

A. 调整加速度计的精度。

B. 准确调整陀螺仪。

C. 调整罗盘的精度。

A. If liquid spills in the kitchen, all traces of the liquid must be cleaned promptly and the concerned area must be completely dry.

B. If liquids are spilled inside the galley, you must remove all signs of liquid and fully dry the areas of contamination immediately.

C. If liquid spills in the galley, all marks of the liquid must be removed at once and the polluted area must be completely dried.

A. This system does not supersede the normal channels of communication for items not covered by the CAP.

B. This system will not change the normal ways of communication for items not listed by the CAP.

C. The normal methods of communication for items contained in the CAP will not be shifted.

A. There is always room for improvement in the effort to describe these steps.

B. It is impossible to list all the steps because there is always room for improvement.

C. Describing these steps need to do a lot of work.