單項選擇題During the voyage he encountered boisterous winds and heavy weather during which time the vessel()heavily and to such an extent that at times it was necessary to change course.

A.moved
B.labored
C.drove
D.went


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2.單項選擇題BASHI:E TO SE 9-10.500M IN HVY SQUALLY SHWRS AND TS.SEA 8-9M.SWELL SE 6-7M.From the above forecast,the wind in Beaufort Scale will be().

A.STRONG GALE TO STORM
B.GALE TO STRONG GALE
C.NEAR GALE TO GALE
D.STRONG BREEZE TO NEAR GALE

3.單項選擇題As the temperature for a given mass of air increases,the().

A.dew point increases
B.dew point decreases
C.relative humidity increases
D.relative humidity decreases

4.單項選擇題Anticyclones are usually characterized by().

A.dry,fair weather
B.high winds and cloudiness
C.gustiness and continuous precipitation
D.overcast skies

5.單項選擇題An occluded front on a weather map is colored().

A.blue line
B.purple line
C.dashed blue line
D.alternate red and blue line