单项选择题
A.great convenience B.finding true north C.magnetic characteristics D.simplicity and reliability
Which of the following is not an operation mode of AIS?...
单项选择题Which of the following is not an operation mode of AIS?（）
A.A ship-to-ship mode B.A ship-to-shore mode C.Integrated with a vessel traffic system D.Sending out information through broadcast automatically
（）is where the crew eat their meals.A.The funnelB.The m...
单项选择题（）is where the crew eat their meals.
A.The funnel B.The messroom C.The galley D.The satellite antenna
When the wave period and the apparent rolling period ar...
单项选择题When the wave period and the apparent rolling period are the same（）.
A.synchronous rolling occurs B.roll period decreases C.roll period increases D.roll amplitude is dampened
