58.Adhere to the safety instructions.

A. 一个尖的整流环把气流分成两部分。

B. 一个整流锥把气流分成两部分。

C. 一个分流整流罩把气流分成两部分。

A. 为防止热损坏襟翼,地面测试自动停止于 30 秒后。

B. 为了阻止热量损伤副翼,地面测试在 30 秒后自发停止。

C. 为防止热损坏缝翼,地面测试在 30 秒后自动停止。

A. Proper recipe shall be adopted to measure the pressure.

B. The pressure shall be estimated by using accurate equation.

C. Calculate the pressure with the applicable formula.

A. 对于涡轮发动机,这些单元不能在主燃料快速断开前后为发动机提供或控制燃料的装置、部件和相关的机械系统或电路;以及推力调节器、燃料流量传感、传输和指示单元。

B. 对于涡轮发动机,那些在主燃油快速断开装置之后为发动机提供或控制燃油的组件、部件和关联的机械系统或电路,以及加力燃烧室、燃油流量速率传感器、传输组件和/或快速断开装置之前或之后的指示组件。

C. 对于涡轮发动机,这些单元可以在主燃料快速断开后为发动机提供或控制燃料的装置、部件和相关的机械系统或电路;以及推力调节器、燃料流量传感、传输和指示单元。

D. C.对于涡轮发动机,这些单元可以在主燃料快速断开后为发动机提供或控制燃料的装置、部件和相关的机械系统或电路;以及推力调节器、燃料流量传感、传输和指示单元。

A. 如果维护消息未在"电流状态"中显示,则出现了连续性故障。

B. 如果维护信息未在"当前状态"中显示,则出现了间歇性故障。

C. 如果维护消息未在"当前状态"中显示,则出现了次级故障。

A. Make sure that the cabin differential pressure is zero before you unlock the door.

B. Be sure that the variance of the cabin pressure is zero before you open the door.

C. Make certain that the difference of the compartment compression is zero before you open the door.

A. The total quantity of fuel in the center tank is 5000 lb.

B. The Total Fuel Quantity of the main tank is 5000 pounds.

C. The total fuel consumption from the center tank is 5000 pounds.

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. You can combine the drains into three primary categories.

B. You can divide the drains into three primary groups.

C. Dividing the drains into three primary groups is an ill-advised option.

A. Push the applicable button to eject the disk drive.

B. Press the applicable key to pop out the tape actuator.

C. Compress the applicable button to jet the disk actuator.