GMDSS地面无线通信系主要由（）频段的通信设备及其终端组成

"According to SMCP, vessel still afloat, abandoned at sea defines （）.

"根据标准航海通信用语,＂ A group of crew members trained for fighting flooding in the vessel＂指的是（） ？

"根据标准航海通信用语,下列哪选项对应错误的是（） ？

"According to SMCP, a sea room to be kept for safety around a vessel, rock, platform, ETC, or the place assigned to a vessel when anchored or lying alongside a pier, etc means （）.

"According to SMCP, to run a vessel up on a beach to prevent its sinking in deep water defines （）

"根据标准航海通信用语,＂ When a wind blows round anticlockwise ＂指的是 （） ？

"ADRIFT、DRIFTING、DRAGGING、DREDGING分别代表什么意思？（）

"根据标准航海通信用语，关于""May"", ""Might"", ""Should"" and ""Could"".以下说法正确的是

"根据标准航海通信用语，关于""May"", ""Might"", ""Should"" and ""Could"".以下说法正确的是

"根据标准航海通信用语,下列说法错误的是 （） ？