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1.______get your engine ready before six tomorrow morning.
单选题A. You’dbetter~||~Youwouldbetter~||~Youatleast~||~Youatmost
2.Navigational warnings and weather bulletins for shipping ______ from Singapore Radio.
单选题A. broadcast~||~broadcasted~||~arebroadcast~||~arebroadcasted
3.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
4.()是由于稳定大气层结中大规模的系统性上升运动而形成的云。
单选题A. 积状云~||~卷状云~||~波状云~||~层状云
5.季风流的流速在苏门答腊附近约2kn,在斯里兰卡南部为2.5kn,在索马里东部为2~3kn。()赤道逆流的位置约在5°S附近,与东北季风流相接,形成了北印度洋冬季反时针方向的环流流系。
单选题A. 冬季~||~秋季~||~夏季~||~春季
6.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
7.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
8.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
9.()是常温下发生相变(固、气、液三态)的唯一大气成分,它也是造成云、雨、雪、雾等现象的主要物质源泉。
单选题A. 氮气~||~水汽~||~二氧化碳~||~臭氧
10.潮汐周日不等(diurnal inequality of tide)的现象为()。
单选题A. 一天有两次涨潮和两次落潮~||~相邻两次高潮或两次低潮潮高不等~||~涨落潮时间不相等~||~一天有两次高潮或两次低潮的潮高以及相邻的高低潮的时间间隔不相等
11.观测时间一律使用世界时(UTC),每天按()观测四次。
单选题A. 00Z06Z12Z18Z~||~03Z09Z15Z21Z~||~00Z12Z~||~08Z14Z20Z02Z
12.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
13.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
14.由于海面风的不同,风海流可分为()
单选题A. 风生流和地转流~||~地转流和补偿流~||~定海流和地转流~||~定海流和风生流
15.某轮候潮过浅滩时,需计算所需潮高,若某轮吃水7.5米,要求富裕水深0.5米,浅滩的海图水深4.3米,则通过浅滩所需的潮高为()。
单选题A. 27米~||~113米~||~37米~||~123米
16.A vessel on the high seas that is not under command shall display which of the following day signals? ______
单选题A. Twoblackballs~||~Threeblackballs~||~Tworedballs~||~Threeredballs
17.It is the responsibility of the crane operator to, at all times, be aware of the location of the __.
单选题A. load~||~hook~||~boom~||~Alloftheabove
18.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
19.How many GMDSS operators are needed/required on board according to the provisions of the International Convention for the Safety of Life at Sea,1974?______.
单选题A. 4operators~||~3operators~||~2operators~||~1operator
20.浓雾警报,则海面能见度为()。
单选题A. 05~5nmile~||~小于05nmile~||~小于2nmile~||~2~5nmile
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