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1.东海和南海盛行东北季风，以东北浪居多，（）东北浪占优势。
单选题A. 渤海海峡~||~北部湾~||~长江口~||~台湾海峡
2.在船底装有发射超声波的发射换能器A和接收超声波的接收换能器B，A与B之间的距离为S，称为基线。发射换能器A以间歇方式向水下发射（）
单选题A. 音频声波连续波~||~连续超声波~||~频率超声波脉冲~||~音频声波脉冲
3.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
4.在潮汐推算中，如主港3月6日低潮时为2357，低潮时差为+0103，则附港为发生同一低潮应在（）
单选题A. 3月6日2254~||~3月7日0100~||~3月7日0003~||~3月6日0100
5.温带气旋而言，表示风力（）
单选题A. 8～9级~||~10～11级~||~≥10级~||~12级
6.PARACEL:N TO NE 6 AND UP TO 10 IN NA. 4000 M IN FRQ SQUALLY SHWRS AND TS. SEA 2 M AND UP TO 8-9 IN NA. SWELL E TO NE 4-5. FROM the above broadcast, the visibility will be ______.
单选题A. good~||~verygood~||~poor~||~moderate
7.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
8.热带风暴(Tropical Storm，简写（）)。
单选题A. TD~||~TS~||~STS~||~T
9.It is the responsibility of the crane operator to, at all times, be aware of the location of the __.
单选题A. load~||~hook~||~boom~||~Alloftheabove
10.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
11.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
12.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
13.The approach to the roads and harbor from the______entails no difficulty．
单选题A. eastern~||~easterly~||~eastward~||~Eastwards
14.12HOURS GALE WARNING VALID FROM 1103990700 UTC. From this phrase, the waring is expected to be valid from ______.
单选题A. 0700UTCMAR11，1999~||~0700UTCNOV03，1999~||~0700UTC，1103UTC，1999~||~NOVMAR19990700UTC
15.在空气纬度和密度相同时，高气压区中等压线的分布规律是（）
单选题A. 曲率半径越小的地方越密集~||~曲率半径越大的地方越稀疏~||~曲率半径越小的地方越稀疏~||~等压线疏密与曲率半径无关
16.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
17.鞍形气压区，两个高压之间的狭长区域称为（）
单选题A. 低压带~||~高压带~||~低压槽~||~高压脊
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.Radar is used not only to look______，but also to measure their distances away from you．
单选题A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects
20.当气流从开阔地区进入峡口时，而（），称为峡谷风。
单选题A. 风速为零~||~风速不变~||~风速减小~||~风速增大
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