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1.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
2.在空气纬度和密度相同时,高气压区中等压线的分布规律是()
单选题A. 曲率半径越小的地方越密集~||~曲率半径越大的地方越稀疏~||~曲率半径越小的地方越稀疏~||~等压线疏密与曲率半径无关
3.7级风速为()m/s。
单选题A. 108-138~||~6-10~||~8-12~||~139-171
4.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
5.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
6.If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?______.
单选题A. Easttonortheast~||~Easttosoutheast~||~Northtonorthwest~||~Southtosoutheast
7.一些大气污染成分在大气中发生化学变化从而会形成有害物质,则最常见的都有()
单选题A. 氮氧化物和粉尘~||~酸雨和粉尘~||~氮氧化物和光化学烟雾~||~酸雨和光化学烟雾
8.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
9.(),如辽阔的海洋、无垠的沙漠、冰雪覆盖的大陆和极区等都可成为气团形成的源地。
单选题A. 大范围物理性质不均匀的下垫面~||~低层存在逆温~||~对流层风的垂直切变要小~||~具备大范围性质比较均匀的下垫面
10.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
11.(),所以露点也直接反映空气中水汽含量多少的物理量。
单选题A. 露点越低,水汽含量越多~||~露点越低,水汽含量越少~||~露点高低不能反映水汽含量的多少~||~露点温度越高,水汽越不容易凝结
12.“无风三尺浪”是指()
单选题A. 海啸~||~风浪~||~涌浪~||~风暴潮
13.Navigational warnings and weather bulletins for shipping ______ from Singapore Radio.
单选题A. broadcast~||~broadcasted~||~arebroadcast~||~arebroadcasted
14.已知磁差Var=2°W,罗经差1°W,磁航向000°,则真航向为()
单选题A. 357°~||~358°~||~359°~||~003°
15.MODERATE WAVES, TAKING A MORE PRONOUNCED LONG FORM;MANY WHITE HORSES ARE FORMED. This sea condition is likely to be termed ______.
单选题A. neargale~||~moderatebreeze~||~freshbreeze~||~strongbreeze
16.In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the ______.
单选题A. southtoeast~||~northtowest~||~northtoeast~||~southtowest
17.12HOURS 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
18.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
19.目标的位置(距离和方位)数据在捕获后即可显示,目标的CPA在()左右(性能标准规定在1min之内)才能显示。
单选题A. 10s~||~20s~||~30s~||~40s
20.天气分布是三维空间的,为了比较全面地揭示天气状况,在气象分析和预报中,通常绘制三种类型的天气图,即()。
单选题A. 高空图为等高面图地面图为等压面图~||~高空图地面图均为等压面图~||~地面天气图高空天气图和辅助图~||~高空图地面图均为等高面图
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