In the flight data recorders the voice recorder tape is “wiped” continuously, so that at any moment the _______ half hour’s data is stored.
A.previous
B.after
C.one
D.before
正确答案是A
In the flight data recorders the voice recorder tape is “wiped” continuously, so that at any moment the _______ half hour’s data is stored.
A.previous
B.after
C.one
D.before
正确答案是A