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1.（）是冷、暖气团势力相当，互有进退，锋面在小范围内来回摆动的锋。
单选题A. 冷锋~||~暖锋~||~准静止锋~||~锢囚锋
2.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
3.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
4.象灯塔、教堂尖顶及锥形浮标等这类锥形目标的反射性能很差，只有当雷达波与其母线（），其反射性能才和圆柱形目标相同
单选题A. 交叉时~||~平行~||~互相成180°角时~||~垂直时
5.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
6.6和12nmile量程上有效，跟踪距离应至少延伸至（）。
单选题A. 10nmile~||~11nmile~||~12nmile~||~13nmile
7.影响海面能见度的因子除雾外，还有（）
单选题A. 风霾雨雪和低云等~||~沙尘暴霾雨雪和中云等~||~沙尘暴霾雨雪和高云等~||~沙尘暴霾雨雪和低云等
8.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
9.南太平洋的西风漂流日流速达10nmile，沿40°～50°S纬度圈流动，属于（）
单选题A. 暖流~||~冷流~||~中性流~||~补偿流
10.（）是由于稳定大气层结中大规模的系统性上升运动而形成的云。
单选题A. 积状云~||~卷状云~||~波状云~||~层状云
11.On no account can they cut it______it be fouled.
单选题A. Do~||~would~||~shall~||~should
12.观测时间一律使用世界时(UTC)，每天按（）观测四次。
单选题A. 00Z06Z12Z18Z~||~03Z09Z15Z21Z~||~00Z12Z~||~08Z14Z20Z02Z
13.My ship sailed______port of Shanghai，bound______Rotterdam．
单选题A. from，for~||~for，on~||~on，at~||~at，from
14.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
15.7级风速为（）m/s。
单选题A. 108-138~||~6-10~||~8-12~||~139-171
16.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
17.Several shoals______reported to exist in the area southwest of the Brothers．
单选题A. have~||~havebeen~||~has~||~hasbeen
18.If a ship will call at four ports for discharging, i.e.A.B.C and D consecutively, the cargo for ______ must generally be loaded first.
单选题A. PortA~||~PortB~||~PortC~||~PortD
19.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
20.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
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