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1.能见度良好情况下,航线与附近有显著物标可供定位和避险的精测危险物之间的距离,至少应保持在()及以上。
单选题A. 1nmile~||~2nmile~||~3nmile~||~4nmile
2.灯塔是雷达良好的目标,雷达的发现距离一般在()之外。
单选题A. 5nmile~||~6nmile~||~7nmile~||~6nmile
3.()是在海面风的作用下形成的海水水平方向的流动,又称风流。
单选题A. 补偿流~||~地转流~||~风海流~||~潮流
4.天气系统的()可产生平流雾。
单选题A. 冷锋后部~||~低压的后部~||~移动性高压的后部~||~移动性高压的前部
5.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
6.在国外地面天气图上,低压中心标注“()”。
单选题A. C~||~A~||~L~||~H
7.12HOURS GALE WARNING VALID FROM 1103990700 UTC. From this phrase, the waring is expected to be valid from ______.
单选题A. 0700UTCMAR11,1999~||~0700UTCNOV03,1999~||~0700UTC,1103UTC,1999~||~NOVMAR19990700UTC
8.南赤道流由几内亚湾开始,沿着约4°N~10°S之间(),属于中性流。
单选题A. 向西流动~||~向东流动~||~向西南流动~||~向西北流动
9.______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
10.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
11.气压梯度的大小取决于等压线的疏密程度。等压线越密集,()
单选题A. 水平气压梯度小~||~水平气压梯度大~||~垂直气压梯度小~||~垂直气压梯度大
12.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
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.在潮汐推算中,如主港3月6日低潮时为2357,低潮时差为+0103,则附港为发生同一低潮应在()
单选题A. 3月6日2254~||~3月7日0100~||~3月7日0003~||~3月6日0100
15.A correction for augmentation is included in the Nautical Almanac corrections for ______.
单选题A. theSun~||~theMoon~||~Venus~||~Noneoftheabove
16.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
17.For working details______Admiralty list of Radio Signal
单选题A. refer~||~see~||~Look~||~watch
18.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
19.(),海洋升温和降温速度远小于陆地。
单选题A. 陆地的热容量是海水热容量的两倍~||~海水的热容量是陆地热容量的两倍~||~海水热容量与陆地相同~||~海陆热力差异与热容量无关
20.大气中的()是温室气体,它对太阳短波辐射吸收甚少,强烈吸收和放射长波辐射,对地面和大气的温度分布有重要影响,类似温室效应。
单选题A. 氧气~||~水汽~||~臭氧~||~二氧化碳
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