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1.当气流从开阔地区进入峡口时,而(),称为峡谷风。
单选题A. 风速为零~||~风速不变~||~风速减小~||~风速增大
2.热带风暴(Tropical Storm,简写())。
单选题A. TD~||~TS~||~STS~||~T
3.在海平面上温度为15℃,高度每升()高英尺,降低2℃
单选题A. 1000~||~2000~||~3000~||~4000
4.A correction for augmentation is included in the Nautical Almanac corrections for ______.
单选题A. theSun~||~theMoon~||~Venus~||~Noneoftheabove
5.In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows ______.
单选题A. ablackball~||~ablackcone~||~twoblackcones~||~abasket
6.It is the responsibility of the crane operator to, at all times, be aware of the location of the __.
单选题A. load~||~hook~||~boom~||~Alloftheabove
7.In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the ______.
单选题A. southtoeast~||~northtowest~||~northtoeast~||~southtowest
8.海图数据库包含海图及其他航海出版物的基础数据ENC及其更新数据,它们在系统内形成()供航海者使用
单选题A. ECDIS~||~ENC~||~SENC
9.AIS目标的缺省显示为()
单选题A. 休眠目标~||~激活目标~||~危险目标~||~丢失目标
10.The approach to the roads and harbor from the______entails no difficulty.
单选题A. eastern~||~easterly~||~eastward~||~Eastwards
11.在平静的大洋航行时,雷达只用于避碰观测,采用()是最方便的选择。
单选题A. H-up~||~N-up~||~C-up~||~真方位TB
12.危险货物报告是()
单选题A. 船舶载有危险货物时所做出的报告~||~当船载危险货物在距岸200nmile范围内散失时所做出的报告~||~当船载危险货物在大洋上散失时所做出的报告~||~当船载危险货物在距岸100nmile范围内散失时所做出的报告
13.The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the ______.
单选题A. Generalcommander~||~Commandergeneral~||~On-scenecommander~||~Searchcommander
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.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
16.用一个扇形区(虚线)表示其未来移动方向和中心可能到达的位置。扇形前面概率圆边上的数字表示预报日期和时间,概率圆的概率约为()
单选题A. 100%~||~80%~||~70%~||~50%
17.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
18.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
19.(),以数字表示、单位为km。
单选题A. 温度~||~降水量~||~水平能见度~||~现在天气现象
20.有资料表明,一个三级浮标装了五角反射器后,探测距离可从1.5nmile增加到()
单选题A. 25nmile~||~3nmile~||~35nmile~||~4nmile
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