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1.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%
2.季风流的流速在苏门答腊附近约2kn,在斯里兰卡南部为2.5kn,在索马里东部为2~3kn。()赤道逆流的位置约在5°S附近,与东北季风流相接,形成了北印度洋冬季反时针方向的环流流系。
单选题A. 冬季~||~秋季~||~夏季~||~春季
3.罗经柜通常由()等非磁性材料制成,主要用来支撑罗盆和安放消除的自差校正器。
单选题A. 铁和铜~||~铜铝木~||~钢和铁~||~铁镍合金
4.海面能见度为1km,那么警报为()。
单选题A. 大风警报~||~一般警报~||~浓雾警报~||~风暴警报
5.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
6.()地区日较差比潮湿地区的大。
单选题A. 沙漠~||~大洋~||~沿岸~||~内陆
7.Do not______the watch to the relieving officer until he has verbally expressed his acknowledgment of the information which has been passed by the officer handing over.
单选题A. turnover~||~handover~||~handsoff~||~takeover
8.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
9.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
10.All the crewmembers shall be at the station as required by the muster list when in firefighting drill______minutes after hearing the alarm,and the duty engineer shall be able to make the fire pumps available with______minutes.
单选题A. 2/5~||~2/3~||~3/2~||~2/2
11.()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
12.船舶在海上转向后,船上罗经会有()误差。
单选题A. 速度和冲击~||~速度和纬度~||~冲击和摇摆~||~纬度和冲
13.在水流影响较大的海域航行时,应输入对()速度。
单选题A. 天~||~地~||~水~||~船
14.台风眼区的天气特征为()
单选题A. 风力最大暴雨~||~风力较弱暴雨~||~风力较大无雨~||~风力较弱无雨
15.入射雷达波与目标表面的夹角(),称为雷达视角
单选题A. (0°~90°)~||~(45°~90°)~||~(90°~130°)~||~(130°~175°)
16.一些小型船舶安装的B类AIS设备,发射功率低,信息更新间隔延长至()
单选题A. 10s~||~20s~||~30s~||~40s
17.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
18.在国外地面天气图上,低压中心标注“()”。
单选题A. C~||~A~||~L~||~H
19.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
20.7级风速为()m/s。
单选题A. 108-138~||~6-10~||~8-12~||~139-171
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