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1.7级风速为（）m/s。
单选题A. 108-138~||~6-10~||~8-12~||~139-171
2.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
3.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
4.在国外地面天气图上，低压中心标注“（）”。
单选题A. C~||~A~||~L~||~H
5.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
6.表层海水温度是指海水表面到（）深处之间的海水温度，以摄氏度(℃)为单位。
单选题A. 05m~||~1m~||~2m~||~5m
7.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
8.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
9.遇有船只避让等特殊情况不能准时观测时，可在（）补测完毕，并在记录表中有关栏内注明。
单选题A. 正点前30min~||~正点后1h内~||~正点后2h内~||~正点后30min内
10.BASHI: E TO SE 9-10. 500M IN HVY SQUALLY SHWRS AND TS. SEA 8-9M. SWELL SE 6-7M. From the above forecast, the wind in Beaufort Scale will be ______.
单选题A. STRONGGALETOSTORM~||~GALETOSTRONGGALE~||~NEARGALETOGALE~||~STRONGBREEZETONEARGALE
11.______20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions(捕获) are possible．
单选题A. Asmanyas~||~Somanyas~||~Asmuchas~||~Asmoreas
12.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
13.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
14.定位精度，PSNGOOD表示飞机定位，误差（）
单选题A. 小于20nmile~||~20～30nmile~||~20～40nmile~||~大于40nmile
15.气压梯度的大小取决于等压线的疏密程度。等压线越密集，（）
单选题A. 水平气压梯度小~||~水平气压梯度大~||~垂直气压梯度小~||~垂直气压梯度大
16.在平静的大洋航行时，雷达只用于避碰观测，采用（）是最方便的选择。
单选题A. H-up~||~N-up~||~C-up~||~真方位TB
17.MODERATE WAVES, TAKING A MORE PRONOUNCED LONG FORM;MANY WHITE HORSES ARE FORMED. This sea condition is likely to be termed ______.
单选题A. neargale~||~moderatebreeze~||~freshbreeze~||~strongbreeze
18.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
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
20.一些大气污染成分在大气中发生化学变化从而会形成有害物质，则最常见的都有（）
单选题A. 氮氧化物和粉尘~||~酸雨和粉尘~||~氮氧化物和光化学烟雾~||~酸雨和光化学烟雾
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