默认题库 - 海上天气现象 - 查题吧

单选题

Most high pressure areas are accompanied by（）.

A. precipitation
B. clear，cool weather
C. humid，sticky weather
D. cool fog

单选题

In bad weather，what length of chain should be used with a single anchor? （）

A. 3 times the depth of water
B. 6 times the depth of water
C. 10 times the depth of water
D. 15 times the depth of water

单选题

Hurricane warnings are issued（）when winds of force 12 or above are expected.

A. in all parts of the world
B. in some parts of the world
C. from all corners of the world
D. from every corner of the world

单选题

Early indications of the approach of a hurricane may be all of the following EXCEPT（）.

A. short confused swells
B. gradually increasing white clouds (mare's tails)
C. pumping barometer
D. continuous fine mist-like rai

单选题

Cirrus clouds are composed primarily of（）.

A. ice crystals
B. water droplets
C. snow crystals
D. nitroge

单选题

An aneroid barometer reading should be corrected for differences in（）.

A. elevation
B. temperature
C. wind speed
D. latitude

单选题

An anemometer on a moving vessel measures（）.

A. apparent wind speed only
B. true wind speed and true wind direction
C. true wind speed only
D. apparent wind speed and true wind directio

单选题

If you are caught in the left semicircle of a tropical storm，in the Southern Hemisphere，you should bring the wind（）.

A. on the starboard quarter，hold course and make as much way as possible
B. 2 points on the port quarter，and make as much way as possible
C. on the port bow，and make as much way as possible
D. dead ahead and heave to

单选题

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

单选题

Isobars on a synoptic chart are useful in predicting（）.

A. temperature
B. dew point
C. wind velocity
D. relative humidity

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