单项选择题
How does a vessel’s rate of turn change when entering shallow water?（）
A.It is faster B.It is slower C.There is no change D.It remains constant for varying propeller revolutions
单项选择题 How does a coast radio station communicating by HF radio normally identify itself?（）
单项选择题 How do you operate a portable CO2 fire extinguisher?（）
单项选择题 How do you determine the weight of the vessel that is supported by the ground when a vessel has run aground?（）
