- 搜标题
- 搜题干
- 搜选项
单项选择题
The ARPA may swap targets when automatically tracking if two targets ______
A．A.are tracked on reciprocal bearings
B．B.are tracked at the same range
C．C.are tracked on the same bearing
D．D.pass close together
B．B.are tracked at the same range
C．C.are tracked on the same bearing
D．D.pass close together
