Apply sealant on the outer surface.

A. 在释压测试期间，不得开启舱门。

B. 在增压测试期间，确保舱门关闭。

C. 进行水压测试时，确保舱门关闭。

A. 从软管开始弯曲的地方测量软管的弯曲半径。

B. 在软管弯曲的地方开始测量软管的内径。

C. 从软管弯曲的内侧开始测量软管弯曲的角度。

A. 确保杆之间有合适的间隙。

B. 确保杆之间有合适的角度。

C. 确保杆之间有足够的间隙。

A. Use some auxiliary screws to assemble the unit temporarily.

B. You shall use some additional screws to install the unit permanently.

C. Temporarily disassemble this unit using some auxiliary screwdrivers.

A. 接近和位置的说明会在这里给出不少信息。

B. 除非很困难，否则接近和位置的说明会在此给出。

C. 除非很明显，否则接近和位置的说明会在此给出。

A. 确保维修飞机时不要撞到勤务箱。

B. 确保勤务车不要撞到飞机。

C. 确保勤务柜不要放在飞机的旁边。

A. If you find metal particles in the reservoir, find their source and repair the broken part.

B. If you find metal particles in the pump, find their source and repair the defective part.

C. If you find material particles in the pump, find their source and repair the damaged part.

A. Make sure that there is airflow in the pipe to hinder .

B. Make sure that there is something in the pipe to block the airflow.

C. Make sure that there is nothing in the pipe to hinder airflow.

A. In flight deck, once you set probe heater switches on the overhead panel automatically, all the heater lights flash.

B. Make sure probe heater switches on the overhead panel in flight deck are in AUTO position and all the heater lights illuminate.

C. Set probe heater switches on the overhead panel in cockpit in AUTO position so that all the heater lights come into view.

A. 如果无线电信号不清晰，调整频率。

B. 如果电子信号不清楚，调整波长。

C. 如果广播信号不清楚，测试频率。