How does a coast radio station communicating by HF radio normally identify itself?()
A. By its subscriber number
By its call sign
C. By its MMSI
D. By its MID
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手机在通话过程中,为防止乒乓切换,可以修改下面哪个参数改善()
A. WI_OP
B. T_HCP
C. BS_PCON_INT
D. PINGPONG_HCP
2015年武汉最低工资什么时候上调?上调后为多少?