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1.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
2.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
3.______the survivors know more of how to cope with cold water in the sinking of MV Titanic in 1912 countless lives ______.
单选题A. Have/couldhavebeensaved~||~Have/couldhavesaved~||~Had/couldhassaved~||~had/couldhavebeensaved
4.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
5.______get your engine ready before six tomorrow morning．
单选题A. You’dbetter~||~Youwouldbetter~||~Youatleast~||~Youatmost
6.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°
7.水平气压梯度力与（）
单选题A. 空气密度成反比，与气压梯度成正比~||~与空气密度成正比，水平气压梯度成正比~||~与空气密度成反比，水平气压梯度成反比~||~与空气密度成正比，水平气压梯度成反比
8.极地大陆气团(Polar continental air mass)：（），空气层结稳定。
单选题A. 干燥低温天气晴朗~||~低温潮湿多阴天~||~干燥低温气层不稳定~||~干燥低温常阴天
9.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
10.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
11.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
12.由于作用在单位质量空气上的压力在水平方向上分布不均匀，所产生的力称为（）
单选题A. 惯性离心力~||~地转偏向力~||~水平摩擦力~||~水平气压梯度力
13.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
14.阵性降水历时短，强度变化很快，骤降骤止，天空时明时暗，降水来自浓积云和（），并常伴有阵性大风等特点。
单选题A. 积雨云~||~淡积云~||~雨层云~||~层云
15.The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the ______.
单选题A. Generalcommander~||~Commandergeneral~||~On-scenecommander~||~Searchcommander
16.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
17.根据干湿球温度表读数的差异变化可以推算平流雾的生消，当干湿球温度的读数趋于一致时，则（）
单选题A. 出现平流雾~||~雾在逐渐消失~||~不会出现平流雾~||~向生雾的趋势发展
18.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
19.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
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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