×
单选题
686. Air supply system is used for pressurizing supply tanks to insure fluid flow
A
Air supply system provides pressurized air to the supply tanks so that they will maintain a positive supply of fluid flow.
B
The pneumatic system is used for increasing the pressure in the supply tanks to make the hydraulic fluid flow.
C
The engine/APU bleed air or external ground air is the main source to pressurize supply tanks to provide a positive supply of fluid to the pumps.
答案解析
正确答案：A
相关题目
单选题
2677. Items not previously considered for inclusion in the CAP may be uncovered through operator inspections These items will be evaluated by ABC
单选题
2676. 如果你不遵守这些预防措施,你的皮肤和肺可能会受伤
单选题
2675. Use some auxiliary screws to assemble the unit temporarily
单选题
2674. 提供给客户的所有技术数据中的术语应保持一致
单选题
2673. Do not exceed this speed with landing gear extended
单选题
2672. 热电偶是两种不同金属之间的结合处,产生的电压与温差有关。
单选题
2671. The specification state that the FAA should be contacted prior to any alterations on airplane to insure that airworthiness of the airplane is not violated
单选题
2670. The exterior covering of the fuselage including access covers and doublers
单选题
2669. 发动机图一部分,包括曲轴,主连杆总成、凸轮、凸轮转动齿轮、挺杆导套、滚柱、托架等
单选题
2668. Drains let fuel in the vent system return to the tanks
