1053.Those units provide a means of preventing it from freezing.

A. 拆下故障部位后部的标签。

B. 排除故障后,拆下标签。

C. 出现故障后,拆下铆钉。

A. Check wash basin drains,water tap and its lines for leakage.

B. Inspect the washing sink,faucet and its pipe for leakage.

C. Examine the washing hand drain port,tap and the line for crack.

A. Disconnect the connection.This connection is downstream of the valve.

B. Disconnect the connection.The valve is downstream of the connection.

C. Disconnect the valve.The valve is downstream of the connection.

A. 描述飞机燃油系统时,应说明交替供油和燃油运输(如适用)。

B. 描述飞机燃油系统时,应提供交输供油和燃油传输(如适用)相关描述。

C. 描述飞机燃油系统时,应说明交叉供油和燃油传递(如适用)。

A. The temperature value must be more than 800 kPa.

B. The compression value must be more than 800 kPa.

C. The pressure value must be more than 800 kPa.

A. 确保座舱温度保持恒定。

B. 确保座舱压力保持不变。

C. 确保座舱湿度保持稳定。

A. A maximum distance of 50 feet is required between consumable materials and the work area.

B. Keep flammable materials at a minimum distance of 50 feet from the work area.

C. Explosive materials must be kept at least 50 feet away from the work area.

A. Scrap the unit at the next check.

B. Repeat the unit at the next check.

C. Change the unit when performing next check.

A. Do not let the flame become solid.

B. Never let the foam become liquid.

C. Do not let the foam become solid.

A. 将五份缺陷报告送到工程主管部门。

B. 将五份无损报告送到发动机权威人士。

C. 将五份探测报表送到主管工程师。