單項(xiàng)選擇題In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.

A.NNW
B.WSW
C.ESE
D.SSW


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1.單項(xiàng)選擇題In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.

A.the wind speed is greater here since the wind is traveling in the same general direction as the storm's track
B.the direction of the wind and seas might carry a vessel into the path of the storm
C.the seas are higher because of greater wind speed
D.All of the above

2.單項(xiàng)選擇題In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.

A.Starboard quarter，hold course and make as much speed as possible
B.Port bow，hold course and make as much speed as possible until the hurricane has passed
C.Port quarter，maintain course and make as much speed as possible
D.Starboard bow and heave to until the hurricane has passed

3.單項(xiàng)選擇題In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.

A.Southwest，clockwise to northwest
B.Northeast，clockwise to west-southwest
C.Northeast，counterclockwise to northwest
D.East，counterclockwise to south-southwest

4.單項(xiàng)選擇題In the Northern Hemisphere a wind is said to veer when the wind（）.

A.Changes direction clockwise，as from north to east，etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise，as from south to east，etc

5.單項(xiàng)選擇題In regions near the poles，the winds are generally described as（）.

A.Westerlies
B.Easterlies
C.Northerlies
D.Southerlies