中央油箱的接近盖板位于哪里?()
A.空调舱
B.大翼下表面
C.轮舱
D.客舱
参考答案:C
She is very dear to us. We have been prepared to do _____ it takes to save her life. [ ]
A. whichever
B. however
C. whatever
D. whoever
氧气瓶与乙炔气瓶不得同放一处,与易燃易爆物或其它明火距离不得小于()。
A、5米
B、10米
C、25米