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1.附港潮高=()。
单选题A. (主港潮高-主港平均海面季节改正)×潮差比+附港平均海面季节改正~||~主港潮高×潮差比+改正值~||~主港潮高-主港平均海面季节改正+潮高差+附港平均海面季节改正~||~主港潮高+主港平均海面季节改正+潮高差-附港平均海面季节改正
2.入射雷达波与目标表面的夹角(),称为雷达视角
单选题A. (0°~90°)~||~(45°~90°)~||~(90°~130°)~||~(130°~175°)
3.影响海面能见度的因子除雾外,还有()
单选题A. 风霾雨雪和低云等~||~沙尘暴霾雨雪和中云等~||~沙尘暴霾雨雪和高云等~||~沙尘暴霾雨雪和低云等
4.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
5.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
6.In the Northern Hemisphere, when the wind at your location is northerly, the low pressure center causing the wind is located to your ______.
单选题A. NNW~||~WSW~||~ESE~||~SSW
7.船舶恒向恒速运动时,陀螺罗经主轴的稳定位置与航速为零时主轴稳定位置二者在方位上的夹角称为()
单选题A. 速度误差~||~摇摆误差~||~冲击误差~||~纬度误差
8.A vessel engaged in fishing shall not impede the passage of______following a traffic lane.
单选题A. (1)~||~(1)&(2)~||~(3)~||~(4)
9.In what units are heights and soundings in the chart? They are in ______.
单选题A. metersandfathoms~||~fathomsandmeters~||~meterandfathom~||~fathomandmeter
10.地理经度和地理纬度的度量范围分别是()
单选题A. 0~90o,0~90o~||~0~180o,0~180o~||~0~90o,0~180o~||~0~180o,0~90o
11.()是一种典型的”陆雾”,在海面上通常不能产生。
单选题A. 锋面雾~||~平流雾~||~蒸汽雾~||~辐射雾
12.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
13.()是影响海面能见度的主要因子。
单选题A. 风~||~浪~||~流~||~雾
14.A correction for augmentation is included in the Nautical Almanac corrections for ______.
单选题A. theSun~||~theMoon~||~Venus~||~Noneoftheabove
15.The correct method of switching off a marine radar is to turn power switch to ____ position fisrt, then to ______ position.
单选题A. off/standby~||~standby/off~||~standby/close~||~close/standby
16.南赤道流由几内亚湾开始,沿着约4°N~10°S之间(),属于中性流。
单选题A. 向西流动~||~向东流动~||~向西南流动~||~向西北流动
17.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
18.在海平面上大气压为1013hpa,高度每升高1000英尺(304.8m),降低()
单选题A. 35hpa~||~36hpa~||~37hpa~||~38hpa
19.AIS目标的缺省显示为()
单选题A. 休眠目标~||~激活目标~||~危险目标~||~丢失目标
20.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
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