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1.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
2.在平静的大洋航行时,雷达只用于避碰观测,采用()是最方便的选择。
单选题A. H-up~||~N-up~||~C-up~||~真方位TB
3.Do not______the watch to the relieving officer until he has verbally expressed his acknowledgment of the information which has been passed by the officer handing over.
单选题A. turnover~||~handover~||~handsoff~||~takeover
4.“无风三尺浪”是指()
单选题A. 海啸~||~风浪~||~涌浪~||~风暴潮
5.一些小型船舶安装的B类AIS设备,发射功率低,信息更新间隔延长至()
单选题A. 10s~||~20s~||~30s~||~40s
6.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
7.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
8.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
9.当船上所有的测风仪器均失灵时,必须根据海面状况进行目力测风,()
单选题A. 风的观测项目可以缺测~||~在离岸较远的海面上,风向与主波向一致,可用罗经测定主波向作为风向~||~在离岸较远的海面上,风向与涌浪来向一致,可用罗经测定涌浪来向作为风向~||~在离岸较远的海面上,风向与风浪来向一致,可用罗经测定风浪来向作为风向
10.我国国家气象局规定,由于冷空气侵袭,我国中央气象台规定24h内降温幅度和日最低气温分别()时,发布寒潮警报。
单选题A. 10℃以上,5℃以上~||~10℃以下,5℃以上~||~10℃以上,5℃以下~||~10℃以下,5℃以下
11.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
12.Several shoals______reported to exist in the area southwest of the Brothers.
单选题A. have~||~havebeen~||~has~||~hasbeen
13.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
14.使锋面向冷空气一侧倾斜的主要原因是()
单选题A. 气压梯度力作用~||~地球自转运动的作用~||~水平方向的空气流动~||~冷暖气团相互抬挤
15.气压观测应在()
单选题A. 正点前15min进行~||~接近正点进行~||~正点前10min进行~||~正点前30min进行
16.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
17.鞍形气压区,两个高压之间的狭长区域称为()
单选题A. 低压带~||~高压带~||~低压槽~||~高压脊
18.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
19.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
20.():大量微小水滴或冰晶浮游空中,常呈乳白色,使水平能见度小于1km。
单选题A. 雾~||~毛毛雨~||~霾~||~轻雾
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