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1.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
2.表示物理现象和大气状态的物理量的气象术语称为()
单选题A. 气象要素~||~迅速递减~||~缓慢递增~||~迅速递增
3.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
4.My vessel______bad weather with winds reaching force 9 on her way home.
单选题A. encountered~||~faced~||~found~||~Met
5.气压观测应在()
单选题A. 正点前15min进行~||~接近正点进行~||~正点前10min进行~||~正点前30min进行
6.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
7.A vessel engaged in fishing shall not impede the passage of______following a traffic lane.
单选题A. (1)~||~(1)&(2)~||~(3)~||~(4)
8.“东风送湿,西风送干”的交换方式属于()
单选题A. 平流~||~辐射~||~湍流~||~对流
9.()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
10.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
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
12.一些小型船舶安装的B类AIS设备,发射功率低,信息更新间隔延长至()
单选题A. 10s~||~20s~||~30s~||~40s
13.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
14.Radar is used not only to look______,but also to measure their distances away from you.
单选题A. atobscuredobjects~||~forwardsubmergedtargets~||~upexposedtargets~||~forunseenobjects
15.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
16.“无风三尺浪”是指()
单选题A. 海啸~||~风浪~||~涌浪~||~风暴潮
17.If the center of low pressure is due west of you in the Northern Hemisphere, which wind direction should you expect?
单选题A. Southtowest~||~Southtoeast~||~Westtonorth~||~Northtoeast
18.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
19.硬铁部分所获得的磁性可以看做在相当长的时间内是稳定的,故称为()
单选题A. 永久船磁~||~感应船磁~||~磁罗经~||~自差罗经
20.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
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