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1.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
2.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
3.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
4.______get your engine ready before six tomorrow morning.
单选题A. You’dbetter~||~Youwouldbetter~||~Youatleast~||~Youatmost
5.风向是指风的来向,海上通常用度数表示,记整数,正北记为0°;风速以m/s为单位,记到小数一位。静风时,风速记0.0,()
单选题A. 风速记为"0"~||~风速记为"-"~||~风向记为"-"~||~风向记为"C"
6.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
7.The correct method of switching off a marine radar is to turn power switch to ____ position fisrt, then to ______ position.
单选题A. off/standby~||~standby/off~||~standby/close~||~close/standby
8.某港某日潮汐资料为:090692cm,1342418cm。该港该日1100的潮高为()
单选题A. 211cm~||~225cm~||~229cm~||~234cm
9.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
10.For working details______Admiralty list of Radio Signal
单选题A. refer~||~see~||~Look~||~watch
11.Many of the lights on this coast are placed so high as to be frequently obscured by______.
单选题A. power~||~tower~||~cover~||~lowclouds
12.If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?______.
单选题A. Easttonortheast~||~Easttosoutheast~||~Northtonorthwest~||~Southtosoutheast
13.象灯塔、教堂尖顶及锥形浮标等这类锥形目标的反射性能很差,只有当雷达波与其母线(),其反射性能才和圆柱形目标相同
单选题A. 交叉时~||~平行~||~互相成180°角时~||~垂直时
14.Several shoals______reported to exist in the area southwest of the Brothers.
单选题A. have~||~havebeen~||~has~||~hasbeen
15.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
16.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
17.温带气旋而言,表示风力()
单选题A. 8~9级~||~10~11级~||~≥10级~||~12级
18.()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
19.当船上所有的测风仪器均失灵时,必须根据海面状况进行目力测风,()
单选题A. 风的观测项目可以缺测~||~在离岸较远的海面上,风向与主波向一致,可用罗经测定主波向作为风向~||~在离岸较远的海面上,风向与涌浪来向一致,可用罗经测定涌浪来向作为风向~||~在离岸较远的海面上,风向与风浪来向一致,可用罗经测定风浪来向作为风向
20.南半球的东南信风越过赤道进入北半球之后,受地转偏向力作用转变为()
单选题A. 西风~||~西南风~||~西北风~||~北风
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