外冲机考科学题1. Eachunitofmeasurementonthewatermetermeans(onecubicmeterofwater)测量水表的每一个单位A. 1,000kgofwaterB. atonofwaterc.onecubicmeterofwater—立方米水2. Thehigherthemagnification,(thesmaller)thefieldofview.放大率越高，视野越小AlargerB.smallerC.same3. Thedistanceoftheradiowavetravelsinasecondis(300thousandkilometers)无线电波在—秒内的传播距离 30 万公里A3000metersB.300thousandkilometersC.30thousandmeters4. (Thelongerdiameterof)themagnifier.thehigherthemagnification.放大镜的直径越长，放大率越高。A. ThethinnerB.ThethickerC.Thelongerdiameterof5. Themoonhasapproximatelya(1/6)ofgravityfoundonEarth.月球大约相当于地球 1/6 的重量。A.1/10B.1/6C.1/26.Whichoneofthefollowingdoesnothavetheeffectofmagnification?下面哪—个没有放大的效果A. Presbyopiaglasses 老花镜B. AdropofwaterC. Theflatsheetglass 平板玻璃7. light-yearisaunitof(distance).光年是距离的单位。AtimeBvolumeCdistance8. Whichoneofthefollowingishardtouse?A.aplier(钳子)B.akeyC.atweezers(镊子)9. Theaveragetemperatureonthehighmountainislowerthanatsealevels.Because 高山上的平均温度低于海平面,因为A. thehighmountainsarecoveredbythesnowthroughoutoftheyearB. itisblowywithlittlesunshineC. airpressureonthehighmountainislower 高山上的气压较低10. Touchingtheoutdoorironmetalsandwoodsinwinterfeelsdifferent,whichmeans在冬天触摸户外的铁金属和木头感觉不一样，这意味着A. thetemperatureofwoodsishigherBthetemperatureofironmetalsishigherC. theyareatthesametemperature 它们的温度是一样的11. Inordertomeltthesnowsontheroadaftersnowing,theroadswillbesalted（撒盐）,because下雪后，为了路上的雪融化,道路将撒盐,因为A. whenthesaltandicemixed,thesnowmeltingpointishigherB. whenthesaltandicemixed,thesnowmeltingpointislower 当盐和冰混合时，雪的熔点较低C. whenthesaltandicemixed,achemicalreactionoccurred12. Thereisaboatwithinmanyrocksfloatingonthelake.Whatwillhappentothesurfaceofthelake,whenyoutaketherocksoutoftheboat?有一艘船装着许多石头漂浮在湖面上。当你把岩石从船上取出时，湖面上会发生什么?A.Ithasnochange.B.Itw...
