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1.（），所以露点也直接反映空气中水汽含量多少的物理量。
单选题A. 露点越低，水汽含量越多~||~露点越低，水汽含量越少~||~露点高低不能反映水汽含量的多少~||~露点温度越高，水汽越不容易凝结
2.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
3.锋面雾最常形成于锢囚气旋中和气旋中暖锋接近中心的部分。多在（）和暖锋前产生，有时缓行冷锋后也形成。
单选题A. 冷锋前~||~冷锋后~||~暖锋后~||~锢囚锋两侧
4.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
5.地理经度和地理纬度的度量范围分别是（）
单选题A. 0～90o，0～90o~||~0～180o，0～180o~||~0～90o，0～180o~||~0～180o，0～90o
6.PUBLIC ADDRESS SYSTEM:LOUDSPEAKERS IN THE VESSEL’S CABINS, MESS ROOMS, ETC., AND ON DECK VIA WHICH IMPORTANT INFORMATION CAN BE BROADCAST FROM A CENTRAL POINT, MOSTLY FROM THE NAVIGATION BRIDGE defines ______.
单选题A. AA-system~||~PP-system~||~PA-system~||~AP-system
7.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
8.因霾使天空的云量、云状全部或部分不明时，（），相应栏记录可辨明部分的云状;若透过这些现象能完全辨明云量、云状时，则按正常情况记录。
单选题A. 低云状栏记"∞"，总低云量栏记"-"~||~云状栏记"∞"，总低云量栏记10~||~云状栏记"-"，总低云量栏记"-"~||~云状云量栏均不作记录
9.The approach to the roads and harbor from the______entails no difficulty．
单选题A. eastern~||~easterly~||~eastward~||~Eastwards
10.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
11.热带风暴(Tropical Storm，简写（）)。
单选题A. TD~||~TS~||~STS~||~T
12.______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
13.引起雷达测距随机误差的原因主要有（）
单选题A. 气象海况目标反射能力雷达设备能力~||~气象海况目标反射能力雷达较准~||~气象海况雷达较准雷达调整~||~雷达较准目标反射能力雷达设备能力
14.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
15.My ship sailed______port of Shanghai，bound______Rotterdam．
单选题A. from，for~||~for，on~||~on，at~||~at，from
16.（）是一种典型的”陆雾”，在海面上通常不能产生。
单选题A. 锋面雾~||~平流雾~||~蒸汽雾~||~辐射雾
17.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
18.用户与卫星间的几何关系对定位误差影响的大小，可用（）GDOP(Geometric Dilutionof Precision)来表示。
单选题A. 精度几何因子~||~三维位置精度几何因子~||~水平方向精度几何因子~||~高程精度几何因子
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.A vessel engaged in fishing shall not impede the passage of______following a traffic lane．
单选题A. (1)~||~(1)&(2)~||~(3)~||~(4)
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