When a wind blows round clockwise，it is（）.

单项选择题A storm is forecast for the area where your vessel is moored. For its safety you should put（）.

A.more slack in the mooring lines
B.a strain on the mooring lines
C.chafing gear on the mooring lines
D.grease on the mooring lines

单项选择题A steep barometric gradient indicates（）.

A.calms
B.light winds
C.strong winds
D.precipitation

单项选择题A katabatic wind blows（）.

A.up an incline due to surface heating
B.in a circular pattern
C.down an incline due to cooling of the air
D.horizontally between a high and a low pressure area

单项选择题A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT（）.

A.higher than normal swells
B.high winds
C.winds veering from south，through west，to northwest
D.light showers

单项选择题（）causing strong winds and rough sea north west Bay of Biscay.

A.Strong low pressure
B.Strong high pressure
C.Steep pressure gradient
D.Steep gradient pressure