航海英语1541Which signal of the follwings is not provided with onboard lifeboat?A.Rocket parachute signalsB.Buoyant smoke signalsC.Hand flare signalsD.Self-igniting signalsKey:D下列哪种信号在救生艇上不配备？自动点火信号2According to IMO regulations,_shall be posed outside lifeboat?A.the retro-reflective tapesB.the reflective tapesC.the flashing bandsD.the anti-flashing bandsKey:A根据国际海事组织规则，反光带应该安放在救生艇外面3Which one of the following is not required on survival crafts?A.Anti-seasickness medicineB.Immersion suitsC.axesD.lifebuoysKey:D下面哪一个在在救生筏上不需要-救生圈4Have the safety belts for _been examined?A.total enclosed lifeboatsB.totally enclosing lifeboatsC.totally enclosed lifeboatsD.total encloseing lifeboatsKey:C全封闭式救生艇的安全带已经检查过了吗？5The fire-protected lifeboats are found_.A.in satisfactorily conditionB.satisfactorilyC.satisfactoryD.satisfactoredKey:C防火救生艇被发现是良好的6We test the water spray fire protection system of fire-protected lifeboats every 3 months,_the abandon ship drill.A.combining withB.combined withC.combining toD.combined toKey:B我们每三个月测试防火救生艇的喷水防火系统，连同弃船训练。7Are your lifeboats fitted with_?A.cargo wiresB.topping liftC.guiding linesD.tripping lineKey:D你的救生艇配备有锚爪拉索吗？8Painting on _is prohibited because it will weaken its sensibilityA.ship shellB.exterior of winchesC.hydrostatic release unitD.hold laddersKey:C在静水压力释放器上涂漆是被禁止的，因为它将会减弱灵敏度9Where shall the key to co2 room be kept?A.In masters cabinB.In third offices cabinC.In a break-glass-type enclosure conspicuously located adjacent to the roomD.In a locked locker conspicuously located adjacent to the roomKey:C 二氧化碳室的钥匙放在哪里？位于临近房间的“击碎玻璃”面卡的 惹人注意的的墙壁上10The firemans outfit consists of_.A.Safety lamp,protective clothing,rigid helmet,breathing apparatusB.Emergency escape breathing device,fire damper,extinguishersC.Firefighting equipment, portable extinguishers,fire dampersD.Fire hoses,fire nozzles,fire hydrants,fire pumpsKey:A消防员装备由安全灯，防护衣，钢盔，呼吸器组成。11Which one of the following is incorrect about Mercator projection?A.It projects a sphere onto a cylinder.B.Because the resulting distance between latitudes are constantly increasing,it is also called progressive projectionC.It can always give true distancesD.It advantage is that longitudes and latitudes are at right angles, which makes it easy to read true bearingsKey:C关于莫卡托投影下面哪项不正确，它总是能提供真实的距离12Why do distances always have to be measured from the nearest scale on a Mercator chart?A.Because it is thr most efficient wayB.Because it varies for each latitudeC.Because it varies with the change of longitudeD.Because it is the most straight line.Key:B为什么在莫卡托海图上距离总是由最近的比例测量，因为它与每个纬度成比例13What is ships heading? ships heading is the direction_.A.the vessel is pointing.B.the vessel is traveling relative to landC.the vessel is traveling relative to groundD.the vessel is driftingKey:A什么是航向？航向是船舶指示的方向14How long would 15 minutes of longitude be at a latitude of 60 degrees North?A.30 nmB.60 nmC.15 nmD.7.5 nmKey:D在北纬60度15分经度是多长？7.5海里15Which one of the followings is incorrect about magnetic compass?A.The magentic compass is compulsory on my vesselB.The magentic compass is prone to errorC.The magentic compass is always placed inside steel constructionsD.The magentic compass needs to be calibrated to compensate for local magnetic distortionKey:C关于磁罗经下面哪项是不正确的？磁罗经总是放在刚性结构里面16Which one of the followings is correct regarding the use of gyrocompass?A.Gyrocompass does not have to be started before sailing.B.Gyrocompass must be stopped when vessel alongside a berthC.Gyrocompass needs to be checked from time to timeD.Gyrocompass is not influenced by the latitude and ships motionKey:C关于旋转罗盘的用途下面哪项正确？旋转罗盘需要经常被核查17What may affect the accuracy of sounding with echo sounder?A.Sea bottomB.Ships speedC.Speed of currentD.Water temperature and densityKey:D什么会影响回声探测仪的精度？水的温度和密度18What often happens when using echo-sounder at river estuary where a layer of fresh water lies on the top of denser salt water?A.A scattering layer appears.B.Echo sounder stops working.C.shallow water appears.D.Nothing abnormal happens.Key:A当回声探测仪使用于一层淡水位于高密度海水之上的河口时将发生什么？出现散射层19Regarding the use of GPS, which one of the followings is incorrect?A.GPS is the most accurate global system today.B.Its use is still under the U.S. Department of Defences controlC.DGPS is more accurate than GPSD.GPS can provide a real-time position under any conditionKey:D关于GPS的用途，下列哪项是不正确的？GPS能在任何条件下提供实时的位置20Without doubt the radar is a highly important navigation aid. But duty officer shall aware that_when using it.A.Its range reading is more accurate than its bearing readingB.A low-lying coastline with a long, flat beach will show up properly on the radarC.Radar is only aimed at collision avoid