单项选择题

Which of the following is not a frontal term（）.

A.Ridge
B.Col
C.Trough
D.Bora

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单项选择题

Which general weather conditions should you expect to find in a low pressure system（）.

A.Fair weather
B.Precipitation and cloudiness
C.Scattered clouds at high elevations
D.Gradual clearing and cooler temperatures

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When steering on autopilot which of the following input conditions may NOT have an effect on the control of the steering gear（）.

A.Non-follow-up
B.Rudder adjustment
C.Weather adjustment
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When observing a rapid rise in barometric pressure，you may expect（）.

A.Clear weather with no wind，but the possibility of rain or snow within 24 hours
B.Deteriorating weather with rain or snow
C.Heavy rain or severe thundershowers
D.Clearing weather，possibly accompanied by high winds