单选题AIS的工作频率是()。A500千赫和2182千赫B161.975兆赫和162.025兆赫C1775.42兆赫和1227.60兆赫D3000兆赫和9375兆赫
单选题
AIS的工作频率是()。
A
500千赫和2182千赫
B
161.975兆赫和162.025兆赫
C
1775.42兆赫和1227.60兆赫
D
3000兆赫和9375兆赫
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