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1.()是影响海面能见度的主要因子。
单选题A. 风~||~浪~||~流~||~雾
2.间接回波的方位通常在()
单选题A. 船首标志线上~||~船尾线方向~||~盲区内~||~阴影扇形内
3.锋面雾最常形成于锢囚气旋中和气旋中暖锋接近中心的部分。多在()和暖锋前产生,有时缓行冷锋后也形成。
单选题A. 冷锋前~||~冷锋后~||~暖锋后~||~锢囚锋两侧
4.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
5.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
6.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
7.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
8.降水主要来自高层云和()
单选题A. 层云~||~雨层云~||~淡积云~||~积雨云
9.风一日内阵性最强在(),一年中阵性最强在夏季。
单选题A. 清晨~||~午后~||~傍晚~||~深夜
10.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%
11.气压是大气压强的简称,它与天气的关系是()
单选题A. 低气压一般对应阴雨天气~||~高气压一般对应阴雨天气~||~高气压中心对应大风天气~||~低气压对应晴好天气
12.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
13.Navigational warnings and weather bulletins for shipping ______ from Singapore Radio.
单选题A. broadcast~||~broadcasted~||~arebroadcast~||~arebroadcasted
14.()是常温下发生相变(固、气、液三态)的唯一大气成分,它也是造成云、雨、雪、雾等现象的主要物质源泉。
单选题A. 氮气~||~水汽~||~二氧化碳~||~臭氧
15.热带风暴(Tropical Storm,简写())。
单选题A. TD~||~TS~||~STS~||~T
16.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
17.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
18.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°
19.冬季,长江口以北海域盛行偏北季风,()多为西北浪和北向浪。
单选题A. 渤海黄海东海南海~||~东海南海~||~黄海东海~||~渤海黄海
20.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
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