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1.船舶在海上转向后,船上罗经会有()误差。
单选题A. 速度和冲击~||~速度和纬度~||~冲击和摇摆~||~纬度和冲
2.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
3.天气是指某一特定区域,()。
单选题A. 气象要素的一年平均特征(其中包括极值)~||~在较长时间内各种气象要素的综合表现~||~气象要素的多年平均特征(其中包括极值)~||~在较短时间内各种气象要素的综合表现
4.在大气成分中,()是影响大气温度分布及其天气变化的主要成分。
单选题A. 氧气臭氧和惰性气体~||~氮气二氧化碳和惰性气体~||~二氧化碳臭氧和水汽~||~二氧化碳臭氧和惰性气体
5.赤道气团(Equatorialairmass):大致位于南北纬10°以内的洋面。具有()的天气特征
单选题A. 干热稳定少有降雨天气~||~高温潮湿层结不稳定多雷阵雨~||~湿热稳定多狂风暴雨天气~||~高温潮湿稳定无大风天气
6.若深海海面风向为SW风,则表层风海流的流向应为()
单选题A. 在北半球为南流在南半球为西流~||~在北半球为东流在南半球为北流~||~在北半球为北流在南半球为东流~||~在北半球为西流在南半球为南流
7.当夏季风盛行时,则表现为()的气候特征。
单选题A. 低温潮湿和少雨~||~高温干燥和少雨~||~高温潮湿和多雨~||~低温潮湿和多雨
8.在()的作用下,在南、北半球副热带地区的对流层中上层气流辐合、聚积形成沿纬圈分布的稳定而深厚的暖性高压带,称副热带高压带,简称副高。
单选题A. 太阳辐射和海陆分布~||~太阳辐射和地形影响~||~太阳辐射和地球自转~||~地球自转和海陆分布
9.In the Northern Hemisphere, when the wind at your location is northerly, the low pressure center causing the wind is located to your ______.
单选题A. NNW~||~WSW~||~ESE~||~SSW
10.在海平面上大气压为1013hpa,高度每升高1000英尺(304.8m),降低()
单选题A. 35hpa~||~36hpa~||~37hpa~||~38hpa
11.If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you, what winds can you expect in the Southern Hemisphere? ______.
单选题A. South-southwesterly~||~North-northwesterly~||~South-southeasterly~||~North-northeasterly
12.水平气压梯度力与()
单选题A. 空气密度成反比,与气压梯度成正比~||~与空气密度成正比,水平气压梯度成正比~||~与空气密度成反比,水平气压梯度成反比~||~与空气密度成正比,水平气压梯度成反比
13.()是一种典型的”陆雾”,在海面上通常不能产生。
单选题A. 锋面雾~||~平流雾~||~蒸汽雾~||~辐射雾
14.天气分布是三维空间的,为了比较全面地揭示天气状况,在气象分析和预报中,通常绘制三种类型的天气图,即()。
单选题A. 高空图为等高面图地面图为等压面图~||~高空图地面图均为等压面图~||~地面天气图高空天气图和辅助图~||~高空图地面图均为等高面图
15.If the center of low pressure is due west of you in the Northern Hemisphere, which wind direction should you expect?
单选题A. Southtowest~||~Southtoeast~||~Westtonorth~||~Northtoeast
16.冷高压(ColdHigh)形成于寒冷的中、高纬度地区,如北半球的格陵兰、加拿大、北极、西伯利亚和蒙古等地,一年四季均有活动,()最频繁。
单选题A. 春季~||~夏季~||~秋季~||~冬季
17.A vessel on the high seas that is not under command shall display which of the following day signals? ______
单选题A. Twoblackballs~||~Threeblackballs~||~Tworedballs~||~Threeredballs
18.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
19.All the crewmembers shall be at the station as required by the muster list when in firefighting drill______minutes after hearing the alarm,and the duty engineer shall be able to make the fire pumps available with______minutes.
单选题A. 2/5~||~2/3~||~3/2~||~2/2
20.Radar is used not only to look______,but also to measure their distances away from you.
单选题A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects
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