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1.由于海面风的不同,风海流可分为()
单选题A. 风生流和地转流~||~地转流和补偿流~||~定海流和地转流~||~定海流和风生流
2.罗北线与磁北线之间的角度 称为()
单选题A. 磁差~||~自差~||~罗经差~||~陀罗差
3.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
4.热带风暴(Tropical Storm,简写TS),风速()(风力8~11级)。
单选题A. 34~47kn~||~34~63kn~||~48~63kn~||~45~55kn
5.My vessel______bad weather with winds reaching force 9 on her way home.
单选题A. encountered~||~faced~||~found~||~Met
6.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
7.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
8.In the Northern Hemisphere, if the center of a high pressure area is due west of you, what wind direction would you expect?______.
单选题A. Southtowest~||~Southtoeast~||~Northtowest~||~Northtoeast
9.潮汐周日不等(diurnal inequality of tide)的现象为()。
单选题A. 一天有两次涨潮和两次落潮~||~相邻两次高潮或两次低潮潮高不等~||~涨落潮时间不相等~||~一天有两次高潮或两次低潮的潮高以及相邻的高低潮的时间间隔不相等
10.定位精度,PSNGOOD表示飞机定位,误差()
单选题A. 小于20nmile~||~20~30nmile~||~20~40nmile~||~大于40nmile
11.选择双向推荐航线时,应将航线设计在推荐航线()适当的地方,以尽可能地避免航行中与来船构成对遇和不协调避让局面。
单选题A. 右侧~||~左侧~||~任何一侧~||~推荐航线上
12.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
13.“无风三尺浪”是指()
单选题A. 海啸~||~风浪~||~涌浪~||~风暴潮
14.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
15.在摩擦层中,水平气压梯度力的方向是()。
单选题A. 垂直等压线由低压指向高压~||~垂直等压线由高压指向低压~||~斜穿等压线由低压指向高压~||~斜穿等压线由高压指向低压
16.Radar is used not only to look______,but also to measure their distances away from you.
单选题A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects
17.通常在近地层风速具有明显的日变化特征,主要表现为()
单选题A. 白天小夜间大~||~白天大夜间小~||~白天和夜间一样大~||~昼夜均小
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.The circular steel structure installed around the propeller of a towboat is the______.
单选题A. nozzle~||~shroud~||~strut~||~Hood
20.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
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