1 "The flight crew oxygen system consists of an oxygen cylinder,valves,indicating components,distribution tubing and crew oxygen mask."Which of the following is not included in the flight crew oxygen system?
A.氧气瓶 B.分配管道 C.探测器 D.氧气面罩正确答案C
1 "The flight crew oxygen system consists of an oxygen cylinder,valves,indicating components,distribution tubing and crew oxygen mask."Which of the following is not included in the flight crew oxygen system?
A.氧气瓶 B.分配管道 C.探测器 D.氧气面罩正确答案C
