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1.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
2.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
3.受地球自转的影响并在控制力矩的作用下,陀螺仪主轴将作()的摆动。
单选题A. 螺旋线等幅~||~双曲线等幅~||~圆型等幅~||~椭圆等幅
4.______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
5.南半球的东南信风越过赤道进入北半球之后,受地转偏向力作用转变为()
单选题A. 西风~||~西南风~||~西北风~||~北风
6.使锋面向冷空气一侧倾斜的主要原因是()
单选题A. 气压梯度力作用~||~地球自转运动的作用~||~水平方向的空气流动~||~冷暖气团相互抬挤
7.______the survivors know more of how to cope with cold water in the sinking of MV Titanic in 1912 countless lives ______.
单选题A. Have/couldhavebeensaved~||~Have/couldhavesaved~||~Had/couldhassaved~||~had/couldhavebeensaved
8.台风眼区的天气特征为()
单选题A. 风力最大暴雨~||~风力较弱暴雨~||~风力较大无雨~||~风力较弱无雨
9.Several shoals______reported to exist in the area southwest of the Brothers.
单选题A. have~||~havebeen~||~has~||~hasbeen
10.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
11.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
12.(),由于地表面有海陆差异、地形起伏等,因此在对流层中,温度、湿度等的水平分布是不均匀的。
单选题A. 气象要素水平分布不均匀~||~气温随高度增加而升高~||~气象要素水平分布均匀~||~空气不易产生对流运动
13.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
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.In the daytime, you see a large sailing vessel on the beam. You know that she is also propelled by machinery if she shows ______.
单选题A. ablackball~||~ablackcone~||~twoblackcones~||~abasket
16.使用分道通航制的船舶,拟定航线时应:所选航线尽量与分道内船舶总流向相一致,并注意让开分隔带和分隔线,双向航路内的航线应尽量靠近航道的()
单选题A. 左侧~||~右侧~||~中间~||~两边
17.罗北偏离真北的角度称为()
单选题A. 磁差~||~自差~||~罗经差~||~陀罗差
18.通常反气旋的强度(intensity)以(),中心气压值越高,表示反气旋越强。
单选题A. 中心最高气压表示~||~最里面闭合等压线数值表示~||~最外面闭合等压线数值表示~||~中心最低气压表示
19.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
20.The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the ______.
单选题A. Generalcommander~||~Commandergeneral~||~On-scenecommander~||~Searchcommander
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