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1.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
2.潮汐周日不等(diurnal inequality of tide)的现象为()。
单选题A. 一天有两次涨潮和两次落潮~||~相邻两次高潮或两次低潮潮高不等~||~涨落潮时间不相等~||~一天有两次高潮或两次低潮的潮高以及相邻的高低潮的时间间隔不相等
3.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
4.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
5.热带风暴(Tropical Storm,简写())。
单选题A. TD~||~TS~||~STS~||~T
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.南太平洋的西风漂流日流速达10nmile,沿40°~50°S纬度圈流动,属于()
单选题A. 暖流~||~冷流~||~中性流~||~补偿流
8.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
9.低层大气中,特别是在近地面附近,风向与等压线斜交,南半球是()的气流系统
单选题A. 低层顺时针辐散~||~低层逆时针辐合~||~低层顺时针辐合~||~低层逆时针辐散
10.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
11.风向是指风的来向,海上通常用度数表示,记整数,正北记为0°;风速以m/s为单位,记到小数一位。静风时,风速记0.0,()
单选题A. 风速记为"0"~||~风速记为"-"~||~风向记为"-"~||~风向记为"C"
12.选择双向推荐航线时,应将航线设计在推荐航线()适当的地方,以尽可能地避免航行中与来船构成对遇和不协调避让局面。
单选题A. 右侧~||~左侧~||~任何一侧~||~推荐航线上
13.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
14.“东风送湿,西风送干”的交换方式属于()
单选题A. 平流~||~辐射~||~湍流~||~对流
15.当气流从开阔地区进入峡口时,而(),称为峡谷风。
单选题A. 风速为零~||~风速不变~||~风速减小~||~风速增大
16.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
17.观测时间一律使用世界时(UTC),每天按()观测四次。
单选题A. 00Z06Z12Z18Z~||~03Z09Z15Z21Z~||~00Z12Z~||~08Z14Z20Z02Z
18.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
19.海上副热带高压中部的天气特点是()
单选题A. 风弱,闷热,多阵雨~||~风强,对流旺盛,多阵雨~||~风弱,闷热,万里无云~||~风强,干爽,万里无云
20.在海平面上温度为15℃,高度每升()高英尺,降低2℃
单选题A. 1000~||~2000~||~3000~||~4000
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