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三副197道题

1.A vessel on the high seas that is not under command shall display which of the following day signals? ______

单选题

A. Twoblackballs~||~Threeblackballs~||~Tworedballs~||~Threeredballs

2.The bow thruster generally is ineffective at ______.

单选题

A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway

3.______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

4.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

5.(),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

6.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

7.在空盒气压表上读数后,除温度订正外,还需进行()才能得到本站气压。

单选题

A. 刻度订正和纬度订正~||~高度订正和刻度订正~||~刻度订正和补充订正~||~高度订正和补充订正

8.(),如辽阔的海洋、无垠的沙漠、冰雪覆盖的大陆和极区等都可成为气团形成的源地。

单选题

A. 大范围物理性质不均匀的下垫面~||~低层存在逆温~||~对流层风的垂直切变要小~||~具备大范围性质比较均匀的下垫面

9.自由陀螺仪指()

单选题

A. 高速旋转的三自由度陀螺仪~||~主轴可指向空间任意方向的陀螺仪~||~不受任何外力矩作用的平衡陀螺仪~||~重心与其中心相重合的三自由度陀螺仪

10.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

11.In the Northern Hemisphere, when the wind at your location is northerly, the low pressure center causing the wind is located to your ______.

单选题

A. NNW~||~WSW~||~ESE~||~SSW

12.当夏季风盛行时,则表现为()的气候特征。

单选题

A. 低温潮湿和少雨~||~高温干燥和少雨~||~高温潮湿和多雨~||~低温潮湿和多雨

13.在国外地面天气图上,低压中心标注“()”。

单选题

A. C~||~A~||~L~||~H

14.海面能见度为1km,那么警报为()。

单选题

A. 大风警报~||~一般警报~||~浓雾警报~||~风暴警报

15.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

16.Several shoals______reported to exist in the area southwest of the Brothers.

单选题

A. have~||~havebeen~||~has~||~hasbeen

17.A vessel engaged in fishing shall not impede the passage of______following a traffic lane.

单选题

A. (1)~||~(1)&(2)~||~(3)~||~(4)

18.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

19.太平洋的西风漂流()越过南太平洋时,在南美西岸有一分支北上形成秘鲁海流,其流速约为0.5kn,属于冷流。

单选题

A. 自北向南~||~自南向北~||~自东向西~||~自西向东

20.雷达距离分辨力与发射脉冲宽度、屏幕像素尺寸、接收通道信号处理失真等()有关。

单选题

A. 设备因素~||~气象海况~||~目标反射能力~||~雷达设备能力

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