A1海区是指至少有一个()海岸电台可以覆盖的区域。

"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 （） ？

"Which of the following is true?()

"When rudder angles e.g. in wheel orders are given, for example “15”,say:（）

"If the true course of a ship is 150°, we will say （）