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1.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
2.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
3.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
4.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
5.():大量微小水滴或冰晶浮游空中,常呈乳白色,使水平能见度小于1km。
单选题A. 雾~||~毛毛雨~||~霾~||~轻雾
6.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
7.海浪干扰在扫描起始点周围形成()
单选题A. 辐射状点线~||~鱼鳞状闪亮随机回波斑点~||~无明显边缘的疏松棉絮状的亮斑区~||~密集点状回波群
8.定位精度,PSNGOOD表示飞机定位,误差()
单选题A. 小于20nmile~||~20~30nmile~||~20~40nmile~||~大于40nmile
9.赤道气团(Equatorialairmass):大致位于南北纬10°以内的洋面。具有()的天气特征
单选题A. 干热稳定少有降雨天气~||~高温潮湿层结不稳定多雷阵雨~||~湿热稳定多狂风暴雨天气~||~高温潮湿稳定无大风天气
10.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
11.某地当日潮汐资料为:1200400cm,1900136cm,则潮高为300cm的潮时为()
单选题A. 1350~||~1457~||~1500~||~1330
12.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
13.在海平面上大气压为1013hpa,高度每升高1000英尺(304.8m),降低()
单选题A. 35hpa~||~36hpa~||~37hpa~||~38hpa
14.A correction for augmentation is included in the Nautical Almanac corrections for ______.
单选题A. theSun~||~theMoon~||~Venus~||~Noneoftheabove
15.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
16.气团的形成必须具备的条件为()
单选题A. 大范围物理性质比较均匀的下垫面和不稳定环流条件~||~大范围比较平坦的下垫面和适当的环流条件~||~大范围物理性质不均匀下垫面和适当的环流条件~||~大范围物理性质比较均匀的下垫面和适当的环流条件
17.The approach to the roads and harbor from the______entails no difficulty.
单选题A. eastern~||~easterly~||~eastward~||~Eastwards
18.在水流影响较大的海域航行时,应输入对()速度。
单选题A. 天~||~地~||~水~||~船
19.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
20.在海平面上温度为15℃,高度每升()高英尺,降低2℃
单选题A. 1000~||~2000~||~3000~||~4000
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