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
单项选择题 When the wave period and the apparent rolling period are the same（）.
单项选择题 In the Northern hemisphere northerly winds may cause temperature（）.
单项选择题 Which of the following is not a form of precipitation?（）
