The pilot should terminate the readback by _______ .
A.the aircraft’s call sign
B.the ATC call sign
C.the word “out”
D.the word “over”
正确答案是A
The pilot should terminate the readback by _______ .
A.the aircraft’s call sign
B.the ATC call sign
C.the word “out”
D.the word “over”
正确答案是A