单项选择题
If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
A.gear extending from the side or stern B.gear that restricts maneuverability C.less than 50 percent trolling lines D.None of the above
单项选择题 How are riveted lap joints made watertight?（）
单项选择题 For the purpose of the Rules，except where otherwise required，the term（）.
单项选择题 FLOATING，CAUSED BY WINDS AND CURRENT WITH A DETERMINABLE DIRECTION defines（）.
