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1.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
2.风一日内阵性最强在（），一年中阵性最强在夏季。
单选题A. 清晨~||~午后~||~傍晚~||~深夜
3.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
4.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
5.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
6.On no account can they cut it______it be fouled.
单选题A. Do~||~would~||~shall~||~should
7.6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
8.______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
9.象灯塔、教堂尖顶及锥形浮标等这类锥形目标的反射性能很差，只有当雷达波与其母线（），其反射性能才和圆柱形目标相同
单选题A. 交叉时~||~平行~||~互相成180°角时~||~垂直时
10.在国外地面天气图上，低压中心标注“（）”。
单选题A. C~||~A~||~L~||~H
11.在空盒气压表上读数后，除温度订正外，还需进行（）才能得到本站气压。
单选题A. 刻度订正和纬度订正~||~高度订正和刻度订正~||~刻度订正和补充订正~||~高度订正和补充订正
12.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
13.表示物理现象和大气状态的物理量的气象术语称为（）
单选题A. 气象要素~||~迅速递减~||~缓慢递增~||~迅速递增
14.在潮汐推算中，如主港3月6日低潮时为2357，低潮时差为+0103，则附港为发生同一低潮应在（）
单选题A. 3月6日2254~||~3月7日0100~||~3月7日0003~||~3月6日0100
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.表层海水温度是指海水表面到（）深处之间的海水温度，以摄氏度(℃)为单位。
单选题A. 05m~||~1m~||~2m~||~5m
17.（），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
18.雷达距离分辨力与发射脉冲宽度、屏幕像素尺寸、接收通道信号处理失真等（）有关。
单选题A. 设备因素~||~气象海况~||~目标反射能力~||~雷达设备能力
19.Several shoals______reported to exist in the area southwest of the Brothers．
单选题A. have~||~havebeen~||~has~||~hasbeen
20.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
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