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1.从地面到大气上界将大气层分为5层,依次为()
单选题A. 对流层平流层中间层热层散逸层~||~对流层平流层中间层散逸层热层~||~对流层散逸层中间层热层平流层~||~对流层等温层中间层热层散逸层
2.()是冷、暖气团势力相当,互有进退,锋面在小范围内来回摆动的锋。
单选题A. 冷锋~||~暖锋~||~准静止锋~||~锢囚锋
3.In beaufort wind scale,sea state with moderate waves,taking longer form,many whitecaps and some spray,is named as______.
单选题A. Strongbreeze~||~Freshbreeze~||~Stronggale~||~Gale
4.下列正确的说法是()
单选题A. 毛毛雨落在水面有波纹,落在甲板上无湿斑~||~毛毛雨落在水面无波纹,落在甲板上有湿斑~||~小雨落在水面会激起波纹或水花,落在甲板上可留下湿斑~||~小雨落在水面无波纹,落在甲板上可留下湿斑
5.引起雷达测距随机误差的原因主要有()
单选题A. 气象海况目标反射能力雷达设备能力~||~气象海况目标反射能力雷达较准~||~气象海况雷达较准雷达调整~||~雷达较准目标反射能力雷达设备能力
6.A correction for augmentation is included in the Nautical Almanac corrections for ______.
单选题A. theSun~||~theMoon~||~Venus~||~Noneoftheabove
7.It takes about 12 seconds to reverse______full speed ahead______full speed astern.
单选题A. at,to~||~to,from~||~from,to~||~at,from
8.Navigational warnings and weather bulletins for shipping ______ from Singapore Radio.
单选题A. broadcast~||~broadcasted~||~arebroadcast~||~arebroadcasted
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.通常在中纬地区陆地上交角约为(),在海面上约为10°~20°。
单选题A. 30°~35°~||~35°~45°~||~45°~50°~||~50°~55°
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.由于作用在单位质量空气上的压力在水平方向上分布不均匀,所产生的力称为()
单选题A. 惯性离心力~||~地转偏向力~||~水平摩擦力~||~水平气压梯度力
13.雷达距离分辨力与发射脉冲宽度、屏幕像素尺寸、接收通道信号处理失真等()有关。
单选题A. 设备因素~||~气象海况~||~目标反射能力~||~雷达设备能力
14.浓雾警报,则海面能见度为()。
单选题A. 05~5nmile~||~小于05nmile~||~小于2nmile~||~2~5nmile
15.Several shoals______reported to exist in the area southwest of the Brothers.
单选题A. have~||~havebeen~||~has~||~hasbeen
16.()是常温下发生相变(固、气、液三态)的唯一大气成分,它也是造成云、雨、雪、雾等现象的主要物质源泉。
单选题A. 氮气~||~水汽~||~二氧化碳~||~臭氧
17.硬铁部分所获得的磁性可以看做在相当长的时间内是稳定的,故称为()
单选题A. 永久船磁~||~感应船磁~||~磁罗经~||~自差罗经
18.Radar is used not only to look______,but also to measure their distances away from you.
单选题A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects
19.(),海洋升温和降温速度远小于陆地。
单选题A. 陆地的热容量是海水热容量的两倍~||~海水的热容量是陆地热容量的两倍~||~海水热容量与陆地相同~||~海陆热力差异与热容量无关
20.附港潮高=()。
单选题A. (主港潮高-主港平均海面季节改正)×潮差比+附港平均海面季节改正~||~主港潮高×潮差比+改正值~||~主港潮高-主港平均海面季节改正+潮高差+附港平均海面季节改正~||~主港潮高+主港平均海面季节改正+潮高差-附港平均海面季节改正
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