航海英语航海气象章节练习(2018.03.17)

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
单项选择题
After a cold front passes，the barometric pressure（）.
A.Drops，and the temperature drops
B.Drops，and the temperature rises
C.Rises，and the temperature drops
D.Rises，and the temperature rises
单项选择题
The Beaufort scale is used to estimate the（）.
A.Wind direction
B.Percentage of cloud cover
C.Wind speed
D.Barometric pressure
单项选择题
In the relatively calm area near the hurricane center，the seas are（）.
A.moderate but easily navigated
B.calm
C.mountainous and confused
D.mountainous but fairly regular as far as direction is concerned
单项选择题
Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit?（）.
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
单项选择题
The wind is（）and decreasing.
A.anticlockwise rotating
B.anticlock rotating
C.clockwise rotating
D.clock rotating
单项选择题
Above-normal tides near the center of a hurricane maybe caused by the（）.
A.high barometric pressure
B.jet stream
C.storm surge
D.torrential rains
单项选择题
A tropical wave is usually preceded by（）.
A.tropical storms
B.good weather
C.heavy rain and cloudiness
D.heavy seas
单项选择题
Snow has obliterated surface features and the sky is covered with uniform，altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called? （）
A.Ice blink
B.Whiteout
C.Water sky
D.Aurora reflection
单项选择题
The length of a wave is the length（）.
A.of the wave's crest
B.of the wave's trough
C.measured from crest to trough
D.measured from crest to crest