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单选题
If an aircraft’s identification is lost before or during a hand-off, the subsequent radar controller must （ ） until the aircraft’s identification is reestablished.
A
instruct the aircraft to climb
B
instruct the aircraft to descend
C
use non-radar procedures to separate the aircraft
D
inform the transferring controller that the aircraft is unacceptable
答案解析
正确答案：C
