The flight crew oxygen system consists of an oxygen cylinder, valves, indicating components, distribution tubing and crew oxygen mask/regulator.机组氧气系统包括:A.氧气瓶.B活门.C.显示部件D.分配导管,机组氧气面罩/调节器.
A.A,B;
B.;B,C
C.C,D;
D.以上都是;
正确答案是D
The flight crew oxygen system consists of an oxygen cylinder, valves, indicating components, distribution tubing and crew oxygen mask/regulator.机组氧气系统包括:A.氧气瓶.B活门.C.显示部件D.分配导管,机组氧气面罩/调节器.
A.A,B;
B.;B,C
C.C,D;
D.以上都是;
正确答案是D