单项选择题
A.A backing wind B.A veering wind C.A norther D.A strong，gusty wind
When your vessel is on or near the path of an approachi...
单项选择题When your vessel is on or near the path of an approaching tropical storm the（）.
A.wind direction remains steady B.wind speed increases C.barometer falls D.All of the above
When experiencing heavy winds，you should reef sails to（...
单项选择题When experiencing heavy winds，you should reef sails to（）.
A.bring the sails parallel to the wind B.reduce sail area exposed to the wind C.allow the sails to catch more wind D.remove all tension on the main and jib sheets
When a tornado moves over the water from land it is cal...
单项选择题When a tornado moves over the water from land it is called a（）.
A.Tornado B.Waterspout C.Hurricane D.Cyclone
