______ is an area within the radiotelephone coverage of at least one VHF coast station in
A. Sea Area A1
B. Sea Area A2
C. Sea Area A3
D. Sea Area A4
人大监督是党和国家监督体系的重要组成部分，是最高层次的监督。()
The range of a SSB transmission is MOST affected by ______．
Atmospheric noise and radiated power
B. The frequency band selected and time of day or night
C. Interference and position of the moon
D. Radiated power and nearness to shore
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