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1.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
2.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
3.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
4.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
5.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
6.()是影响海面能见度的主要因子。
单选题A. 风~||~浪~||~流~||~雾
7.热带气旋与温带气旋相比较,通常从中心向外围的大风变化为()
单选题A. 两者均迅速减小~||~前者迅速减小,后者缓慢减小~||~前者缓慢减小,后者迅速减小~||~两者均缓慢减小
8.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
9.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
10.The circular steel structure installed around the propeller of a towboat is the______.
单选题A. nozzle~||~shroud~||~strut~||~Hood
11.6和12nmile量程上有效,跟踪距离应至少延伸至()。
单选题A. 10nmile~||~11nmile~||~12nmile~||~13nmile
12.船舶恒向恒速运动时,陀螺罗经主轴的稳定位置与航速为零时主轴稳定位置二者在方位上的夹角称为()
单选题A. 速度误差~||~摇摆误差~||~冲击误差~||~纬度误差
13.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
14.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
15.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
16.My vessel______bad weather with winds reaching force 9 on her way home.
单选题A. encountered~||~faced~||~found~||~Met
17.一些大气污染成分在大气中发生化学变化从而会形成有害物质,则最常见的都有()
单选题A. 氮氧化物和粉尘~||~酸雨和粉尘~||~氮氧化物和光化学烟雾~||~酸雨和光化学烟雾
18.远离或尚未影响到预报责任区时,根据需要可以发布“消息”,预计未来()内将影响本责任区的沿海地区或登临时发布警报
单选题A. 24h~||~48h~||~72h~||~36h
19.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
20.根据()的不同特征又可以将对流层分为行星边界层或摩擦层和自由大气。
单选题A. 气温~||~大气运动~||~湿度~||~气压
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