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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.PARACEL:N TO NE 6 AND UP TO 10 IN NA. 4000 M IN FRQ SQUALLY SHWRS AND TS. SEA 2 M AND UP TO 8-9 IN NA. SWELL E TO NE 4-5. FROM the above broadcast, the visibility will be ______.
单选题A. good~||~verygood~||~poor~||~moderate
3.当夏季风盛行时,则表现为()的气候特征。
单选题A. 低温潮湿和少雨~||~高温干燥和少雨~||~高温潮湿和多雨~||~低温潮湿和多雨
4.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
5.()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
6.______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
7.()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
8.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
9.遇有船只避让等特殊情况不能准时观测时,可在()补测完毕,并在记录表中有关栏内注明。
单选题A. 正点前30min~||~正点后1h内~||~正点后2h内~||~正点后30min内
10.在摩擦层中,水平气压梯度力的方向是()。
单选题A. 垂直等压线由低压指向高压~||~垂直等压线由高压指向低压~||~斜穿等压线由低压指向高压~||~斜穿等压线由高压指向低压
11.For working details______Admiralty list of Radio Signal
单选题A. refer~||~see~||~Look~||~watch
12.(),以数字表示、单位为km。
单选题A. 温度~||~降水量~||~水平能见度~||~现在天气现象
13.通常在近地层风速具有明显的日变化特征,主要表现为()
单选题A. 白天小夜间大~||~白天大夜间小~||~白天和夜间一样大~||~昼夜均小
14.Fishing stake, the position of which frequently _____, exist in the area covered by this chart.
单选题A. removed~||~altered~||~corrected~||~Converted
15.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
16.热带气旋与温带气旋相比较,通常从中心向外围的大风变化为()
单选题A. 两者均迅速减小~||~前者迅速减小,后者缓慢减小~||~前者缓慢减小,后者迅速减小~||~两者均缓慢减小
17.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
18.If a ship will call at four ports for discharging, i.e.A.B.C and D consecutively, the cargo for ______ must generally be loaded first.
单选题A. PortA~||~PortB~||~PortC~||~PortD
19.ECS是用来显示()的海图显示系统。
单选题A. 矢量电子海图~||~光栅海图~||~系统电子航海图~||~非官方矢量电子海图或光栅电子海图数据库
20.罗北偏离真北的角度称为()
单选题A. 磁差~||~自差~||~罗经差~||~陀罗差
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