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1.当湿球因蒸发而消耗的热量和从周围空气中获得的热量相平衡时,湿球温度就不再继续下降,这样就维持了相对稳定的干、湿球温度差。干、湿球温度差值的大小,主要与当时的()大小有关。
单选题A. 气压~||~空气湿度~||~空气密度~||~能见度
2.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
3.低层大气中,特别是在近地面附近,风向与等压线斜交,南半球是()的气流系统
单选题A. 低层顺时针辐散~||~低层逆时针辐合~||~低层顺时针辐合~||~低层逆时针辐散
4.All the crewmembers shall be at the station as required by the muster list when in firefighting drill______minutes after hearing the alarm,and the duty engineer shall be able to make the fire pumps available with______minutes.
单选题A. 2/5~||~2/3~||~3/2~||~2/2
5.兰勃特投影法又称等角正割圆锥投影。将地球体的()纬圈与圆锥面相割。
单选题A. 30°和45°~||~30°和60°~||~225°和45°~||~33°和66°
6.一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
7.Several shoals______reported to exist in the area southwest of the Brothers.
单选题A. have~||~havebeen~||~has~||~hasbeen
8.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
9.沙漠地区日较差比潮湿地区的大,()
单选题A. 晴天的气温日较差比阴天大~||~阴天的气温日较差比晴天大~||~晴天的气温日等于阴天~||~多云的气温日较差比晴天大
10.电子海图作为一个总概念可分为两个部分:一个部分是()电子海图数据,另一个部分是基于电子海图数据的应用系统。
单选题A. 电子海图数据~||~光栅海图~||~矢量海图~||~系统电子航海图
11.天气是指某一特定区域,()。
单选题A. 气象要素的一年平均特征(其中包括极值)~||~在较长时间内各种气象要素的综合表现~||~气象要素的多年平均特征(其中包括极值)~||~在较短时间内各种气象要素的综合表现
12.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
13.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
14.在大气成分中,()是影响大气温度分布及其天气变化的主要成分。
单选题A. 氧气臭氧和惰性气体~||~氮气二氧化碳和惰性气体~||~二氧化碳臭氧和水汽~||~二氧化碳臭氧和惰性气体
15.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
16.In the Northern Hemisphere, if the center of a high pressure area is due west of you, what wind direction would you expect?______.
单选题A. Southtowest~||~Southtoeast~||~Northtowest~||~Northtoeast
17.入射雷达波与目标表面的夹角(),称为雷达视角
单选题A. (0°~90°)~||~(45°~90°)~||~(90°~130°)~||~(130°~175°)
18.The bow thruster generally is ineffective at ______.
单选题A. over3knotsheadway~||~atanyspeedastern~||~atanyspeedahead~||~over1knotsternway
19.选择双向推荐航线时,应将航线设计在推荐航线()适当的地方,以尽可能地避免航行中与来船构成对遇和不协调避让局面。
单选题A. 右侧~||~左侧~||~任何一侧~||~推荐航线上
20.()附近,昼夜长短几乎相等,最热月和最冷月热量收支相差不大,气温年较差小。
单选题A. 沙漠~||~草地~||~海洋~||~赤道
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