If the radar receiver detects the retarding time tR＝500(S between transmitting pulse and receiving pulse, now the target is _______ km from the radar station.
A.150
B.120
C.100
D.75
正确答案是D
If the radar receiver detects the retarding time tR＝500(S between transmitting pulse and receiving pulse, now the target is _______ km from the radar station.
A.150
B.120
C.100
D.75
正确答案是D