航海英语【船长甲类】题库 单选题 1分 In the doldrums you will NOT have ___. A. high relative humidity B. frequent showers and thunderstorms C. steep pressure gradients D. frequent calms 点击查看答案 进入题库练习 参考答案: C 你可能感兴趣的试题 1 单选题 1分 A frontal thunderstorm is caused by__________. A.pronounced local heating B.wind being pushed up a mountain C.a warm air mass rising over a cold air mass D.an increased lapse rate caused by advection of warm surface air 点击查看答案 2 单选题 1分 When an air mass moves near the equator, it would lie ____① high in temperature② high in absolute humidity. A. ①only B. ② only C. both①and② D. neither①nor② 点击查看答案 3 单选题 1分 A line of clouds, sharp changes in wind direction, and squalls are most frequently associated with a(n)_____ A. occluded front B. warm front C. cold front D. warm sector 点击查看答案 4 单选题 1分 A slow rise in the barometric pressure forecasts __ A. rainy weather for the next 48 hours B. high seas C. improving weather conditions D. deteriorating weather conditions 点击查看答案 5 单选题 1分 A slow,gradual fall of the barometer indicates approaching __ A. gale force winds within 12 hours ~ B. blizzard conditions C. deteriorating or unsettled weather D. heavy,wind driven rain 点击查看答案