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1.（），以数字表示、单位为km。
单选题A. 温度~||~降水量~||~水平能见度~||~现在天气现象
2.通常将海陆热力差异形成的季风称为海陆季风，它主要出现在（）
单选题A. 低纬地区~||~高纬地区~||~极地地区~||~赤道地区
3.A vessel engaged in fishing shall not impede the passage of______following a traffic lane．
单选题A. (1)~||~(1)&(2)~||~(3)~||~(4)
4.气压场：锋面两侧的（）
单选题A. 气压梯度连续，等压线过锋线的折角指向低压~||~气压梯度连续，等压线过锋线的折角指向高压~||~气压梯度不连续，等压线过锋线的折角指向低压~||~气压梯度是不连续的，等压线通过锋面有指向高压的折角
5.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
6.我国国家气象局规定，由于冷空气侵袭，我国中央气象台规定24h内降温幅度和日最低气温分别（）时，发布寒潮警报。
单选题A. 10℃以上，5℃以上~||~10℃以下，5℃以上~||~10℃以上，5℃以下~||~10℃以下，5℃以下
7.天气系统的（）可产生平流雾。
单选题A. 冷锋后部~||~低压的后部~||~移动性高压的后部~||~移动性高压的前部
8.Fishing stake, the position of which frequently _____, exist in the area covered by this chart.
单选题A. removed~||~altered~||~corrected~||~Converted
9.The correct method of switching off a marine radar is to turn power switch to ____ position fisrt, then to ______ position.
单选题A. off/standby~||~standby/off~||~standby/close~||~close/standby
10.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
11.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
12.For working details______Admiralty list of Radio Signal
单选题A. refer~||~see~||~Look~||~watch
13.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
14.Get searchlight______for transiting the canal at night．
单选题A. on~||~already~||~Almost~||~ready
15.热带风暴(Tropical Storm，简写TS)，风速（）(风力8～11级)。
单选题A. 34～47kn~||~34～63kn~||~48～63kn~||~45～55kn
16.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
17.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
18.Do not______the watch to the relieving officer until he has verbally expressed his acknowledgment of the information which has been passed by the officer handing over．
单选题A. turnover~||~handover~||~handsoff~||~takeover
19.In beaufort wind scale，sea state with moderate waves，taking longer form，many whitecaps and some spray，is named as______．
单选题A. Strongbreeze~||~Freshbreeze~||~Stronggale~||~Gale
20.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
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