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1.气压梯度的大小取决于等压线的疏密程度。等压线越密集,()
单选题A. 水平气压梯度小~||~水平气压梯度大~||~垂直气压梯度小~||~垂直气压梯度大
2.海图数据库包含海图及其他航海出版物的基础数据ENC及其更新数据,它们在系统内形成()供航海者使用
单选题A. ECDIS~||~ENC~||~SENC
3.若深海海面风向为SW风,则表层风海流的流向应为()
单选题A. 在北半球为南流在南半球为西流~||~在北半球为东流在南半球为北流~||~在北半球为北流在南半球为东流~||~在北半球为西流在南半球为南流
4.陀罗方位是指()
单选题A. 真北和航向线之间的夹角~||~真北和方位线之间的夹角~||~陀罗北和航向线之间的夹角~||~陀罗北和方位线之间的夹角
5.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
6.属于硬铁校正器,主要用于校正船舶垂直硬铁船磁力在船舶摇摆时对罗经产生的()
单选题A. 象限自差~||~半圆自差~||~倾斜自差~||~椭圆自差
7.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
8.自由陀螺仪指()
单选题A. 高速旋转的三自由度陀螺仪~||~主轴可指向空间任意方向的陀螺仪~||~不受任何外力矩作用的平衡陀螺仪~||~重心与其中心相重合的三自由度陀螺仪
9.水平气压梯度力与()
单选题A. 空气密度成反比,与气压梯度成正比~||~与空气密度成正比,水平气压梯度成正比~||~与空气密度成反比,水平气压梯度成反比~||~与空气密度成正比,水平气压梯度成反比
10.AIS每分钟可以处理()个以上报告。
单选题A. 1000~||~2000~||~3000~||~4000
11.On no account can they cut it______it be fouled.
单选题A. Do~||~would~||~shall~||~should
12.沙漠地区日较差比潮湿地区的大,()
单选题A. 晴天的气温日较差比阴天大~||~阴天的气温日较差比晴天大~||~晴天的气温日等于阴天~||~多云的气温日较差比晴天大
13.1997年11月27日,IMO()通过了《船载航行数据记录仪(VDR)性能标准》A.861(20)号决议。
单选题A. 第18次会议~||~第19次会议~||~第20次会议~||~第21次会议
14.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
15.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
16.东海和南海盛行东北季风,以东北浪居多,()东北浪占优势。
单选题A. 渤海海峡~||~北部湾~||~长江口~||~台湾海峡
17.由于冷空气比暖空气重,随着地球自转,这个过渡带(交界面),向冷气团()
单选题A. 水平~||~垂直~||~螺旋~||~倾斜
18.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
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.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
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