问题
单项选择题
Loran-C is which type of system().
A.Reflected electron
B.Electrical radiation
C.Quarterpoint electrical navigation
D.Hyperbolic radio navigation
答案
参考答案:D
Loran-C is which type of system().
A.Reflected electron
B.Electrical radiation
C.Quarterpoint electrical navigation
D.Hyperbolic radio navigation
参考答案:D