How is “radio silence” imposed?()
A. By the On Scene Coordinator (OSC)
By the Coast Earth Station (CES) controlling the distress communications on that frequency
C. It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
D. It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel
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散打战术训练先应树立正确的()、要遵循()和(),注意()和()。
循环倍率是指该循环回路所产生的蒸汽流量。
A. 正确
B. 错误
国际税收是关于()
A. 发生在国家之间的一切税务关系
B. 本国税制中有关涉外的部分
C. 发生在国家之间的税收分配关系
D. 对某些外国税制所进行的比较研究