Text may be prepared in one or two columns with or without justification. Warnings, cautions and notes may be used to highlight or emphasize important points.

A. 如果安装了某一个设备，那么要说明安装它的重要性。

B. 如果安装了其中一个设备，则说明它是否是必需的设备。

C. 如果安装了两个设备，需要说明其必要性。

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. Utilize an oil-free solution.

B. Use a solution with oil.

C. The oil is not used that contains a solution.

A. If the brackets are not damaged, continue the procedure.

B. In the absence of damage to the brackets, recall the process.

C. When bracket damage occurs, recall the procedure.

A. The flight deck is located between the pressure dome and the front passenger door, and it is above the floor.

B. Cockpit is on the floor panel and between the pressure dome and the rear passenger partition.

C. Flight compartment is above the floor and between the forward passenger partition and the forward pressure dome.

A. Those units and components are responsible for storing and delivering fuel to the turbines system, including engine-driven fuel pumps, fuel tanks (airbags), valves, booster pumps, etc. and provide components for dumping fuel overboard.

B. Those units and components are used to store and deliver fuel to the engine, including engine-driven fuel pumps, integral tanks (bladder), valves, boost pumps, etc., and those components which furnish a means of in-flight fuel dumping .

C. Those units and components are designed to store and deliver fuel to the gas engine system, including engine-driven fuel pumps, fuel tanks (airbags), valves, booster pumps, etc. and units to pour fuel to the air.

A. 风扇有自动开关用以保护风扇过热受损。

B. 风扇有保护电门用以防止风扇过度受损。

C. 风扇有热电门用以避免风扇过热受损。

A. 余下说明仅适用于装有机身油箱的飞机。

B. 装有中心油箱的飞机可以参考下面的说明。

C. 下面的说明阐述了装有机身油箱的飞机的操作规范。

A. 注意，如果没有正确执行以下步骤，会导致人员伤亡。

B. 警告，如果你不正确听从指挥，则会导致人员伤亡。

C. 如果没有正确遵循警告里的要求，将会导致人员伤亡。

A. 在程序中，提供简短，清晰的指令并且直接向读者讲话。

B. 在程序中给出简短，清晰的指令，直接向读者陈述。

C. 在程序执行中，要向读者直接发话，给出简短清晰的指令。