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三副197道题

1.影响海面能见度的因子除雾外,还有()

单选题

A. 风霾雨雪和低云等~||~沙尘暴霾雨雪和中云等~||~沙尘暴霾雨雪和高云等~||~沙尘暴霾雨雪和低云等

2.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"

3.The approach to the roads and harbor from the______entails no difficulty.

单选题

A. eastern~||~easterly~||~eastward~||~Eastwards

4.500hPa等压面的平均海拔高度约为()

单选题

A. 4500m~||~5000m~||~5500m~||~6000m

5.目标的位置(距离和方位)数据在捕获后即可显示,目标的CPA在()左右(性能标准规定在1min之内)才能显示。

单选题

A. 10s~||~20s~||~30s~||~40s

6.(),由于地表面有海陆差异、地形起伏等,因此在对流层中,温度、湿度等的水平分布是不均匀的。

单选题

A. 气象要素水平分布不均匀~||~气温随高度增加而升高~||~气象要素水平分布均匀~||~空气不易产生对流运动

7.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

8.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

9.下列有关真方位度量的说法中,正确是()

单选题

A. 由真北逆时针度量到物标方位线,度量范围000o~360o~||~由真北顺时针度量到物标方位线,度量范围000o~360o~||~由陀螺北逆时针度量到物标方位线,度量范围000o~360o~||~由陀螺北顺时针度量到物标方位线,度量范围000o~360o

10.How many GMDSS operators are needed/required on board according to the provisions of the International Convention for the Safety of Life at Sea,1974?______.

单选题

A. 4operators~||~3operators~||~2operators~||~1operator

11.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

12.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

13.()为南海季风转换月份,风向不稳定,海流处于转换之中,比较零乱。

单选题

A. 1月和7月~||~3月和9月~||~4月和10月~||~6月和12月

14.Radar is used not only to look______,but also to measure their distances away from you.

单选题

A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects

15.If a ship will call at four ports for discharging, i.e.A.B.C and D consecutively, the cargo for ______ must generally be loaded first.

单选题

A. PortA~||~PortB~||~PortC~||~PortD

16.已知磁差Var=2°W,罗经差1°W,磁航向000°,则真航向为()

单选题

A. 357°~||~358°~||~359°~||~003°

17.The bow thruster generally is ineffective at ______.

单选题

A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway

18.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

19.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

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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