The airplane altitude above sea level is determined by measuring the pressure of the _______(外界大气压力).
A.airplane cruise altitude;
B.ambient atmosphere;
C.cabin altitude;
D.flight time;
正确答案是B
The airplane altitude above sea level is determined by measuring the pressure of the _______(外界大气压力).
A.airplane cruise altitude;
B.ambient atmosphere;
C.cabin altitude;
D.flight time;
正确答案是B