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1.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
2.从地面向上随着高度的增加而空气密度则()
单选题A. 缓慢递减~||~迅速递减~||~缓慢递增~||~迅速递增
3.6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
4.()是影响海面能见度的主要因子。
单选题A. 风~||~浪~||~流~||~雾
5.AIS每分钟可以处理()个以上报告。
单选题A. 1000~||~2000~||~3000~||~4000
6.It takes about 12 seconds to reverse______full speed ahead______full speed astern.
单选题A. at,to~||~to,from~||~from,to~||~at,from
7.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
8.在国外地面天气图上,低压中心标注“()”。
单选题A. C~||~A~||~L~||~H
9.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
10.冷高压(ColdHigh)形成于寒冷的中、高纬度地区,如北半球的格陵兰、加拿大、北极、西伯利亚和蒙古等地,一年四季均有活动,()最频繁。
单选题A. 春季~||~夏季~||~秋季~||~冬季
11.For working details______Admiralty list of Radio Signal
单选题A. refer~||~see~||~Look~||~watch
12.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
13.冬季,长江口以北海域盛行偏北季风,()多为西北浪和北向浪。
单选题A. 渤海黄海东海南海~||~东海南海~||~黄海东海~||~渤海黄海
14.______the survivors know more of how to cope with cold water in the sinking of MV Titanic in 1912 countless lives ______.
单选题A. Have/couldhavebeensaved~||~Have/couldhavesaved~||~Had/couldhassaved~||~had/couldhavebeensaved
15.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
16.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
17.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
18.当气流从开阔地区进入峡口时,而(),称为峡谷风。
单选题A. 风速为零~||~风速不变~||~风速减小~||~风速增大
19.从地面到大气上界将大气层分为5层,依次为()
单选题A. 对流层平流层中间层热层散逸层~||~对流层平流层中间层散逸层热层~||~对流层散逸层中间层热层平流层~||~对流层等温层中间层热层散逸层
20.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
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