×
单选题
79.APU is running and APU bleed air system is in use. What happens if APU MASTER SW pushbutton is released out ?
A
The APU shuts down after a cooling cycle has been completed.
B
The APU shuts down immediately.
C
The APU shuts down after the closure of fuel LP shut off valve.
答案解析
正确答案：A
相关题目
单选题
582.Where does the LAV and GALLEYS ventilation air come from?
单选题
581.CABIN PRESS FAULT light comes on when:
单选题
580.In manual mode ,warnings and indications come from:
单选题
579.Motor 3 is controlled from:
单选题
578.Which interfaces are used for prepressurization and pressurization sequence initialization?
单选题
577.What happens if the MODE SELECTOR is set to MAN and the DITCHING pusbuttom is set ON?
单选题
576.Where do you check tje correct Manual landing elevation setting?
单选题
575.What is the maximum normal cabin altitude for maximum cruise level(39000Ft)
单选题
574.Which motor is controlled from the cabin pressure panel?
单选题
573.What is the purpose of the safety valves?
