[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fP4cJFEWxLLSjwryBe4pqYQOgjJQ6uLxaiJZYQz-NHdU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":25,"type":46},[],"2026-05-20 20:24:50",1118756396,[8,9,10,11],"变介电常数(介质变化型)电容传感器主要用于测量介质的介电参数","变极距和变面积电容式传感器不适合测量较大的位移","变压器结构的交流电桥可以降低变极距电容传感器的非线性误差","差动结构的电容传感器可以降低边缘效应的影响",{"courseId":13,"workId":14,"workName":15},"1000083090","66953743","第四章单元测试","关于电容传感器下列说法正确的是( )",[18,27,32,37,47,57,60,69,78,87],{"answer":19,"createTime":5,"id":20,"options":21,"question":24,"source":25,"type":26},[],1118756384,[22,23],"对","错","电容式传感器的连接电缆的长度不能任意改变,若要改变可采取驱动电缆技术( )","v2",3,{"answer":28,"createTime":5,"id":29,"options":30,"question":31,"source":25,"type":26},[],1118756385,[22,23],"电容式传感器不可实现非接触测量.( )",{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":25,"type":26},[],1118756386,[22,23],"电容式传感器可以对位移、加速度、压力等进行测量.( )",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":25,"type":46},[],1118756394,[41,42,43,44],"C增大表示h增大","C增大表示h减小","C减小表示h减小","C减小表示h增大","如图所示是一种测定液面高度的电容式传感器的示意图.金属芯线与导电液体形成一个电容器,从电容C大小的变化就能反映液面的升降情况,两者的关系是( )",1,{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":25,"type":56},[],1118756395,[51,52,53,54],"(2)(3)","(1)(3)","(2)(4)","(1)(2)","如图所示是一种测定压力的电容式传感器,A为固定电极,B为可动电极,组成一个电容大小可变的电容器.可动电极两端固定,当待测压力施加在可动电极上时,可动电极发生形变,从而改变了电容器的电容.现将此电容式传感器与零刻度在中央的灵敏电流表和电源串联成闭合电路,已知电流从电流表正接线柱流入时指针向右偏转.当待测压力增大时,有下列说法其中正确的是( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1b5f2f6388a01a14df9498c8a6e60ca2.png\">(1)电容器的电容将减小(2)电容器的电量将增加(3)灵敏电流表指针向左偏转(4)灵敏电流表指针向右偏转",0,{"answer":58,"createTime":5,"id":6,"options":59,"question":16,"source":25,"type":46},[],[8,9,10,11],{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":25,"type":56},[],1118756397,[64,65,66,67],"灵敏度K0增加","灵敏度K0不变","非线性误差增加","非线性误差减小","当变隙式电容传感器的两极板极间的初始距离d0增加时,将引起传感器的( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":25,"type":56},[],1118756398,[73,74,75,76],"增加","减小","不变","不确定","变气隙式自感传感器,当街铁移动靠近铁芯时,铁芯上的线圈电感量( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":25,"type":56},[],1118756399,[82,83,84,85],"改变了湿度","改变了温度","改变了磁场","改变了电容","随着生活质量的提高,自动干手机已进入家庭,洗手后,将湿手靠近自动干手机,机内的传感器便驱动电热器加热,有热空气从机内喷出,将湿手烘干,手靠近干手机能使传感器工作,是因为 ( )",{"answer":88,"createTime":5,"id":89,"options":90,"question":95,"source":25,"type":56},[],1118756400,[91,92,93,94],"电容量","电感量","介电常数","距离","电容式传感器是将被测量的变化转换成 ( ) 变化一种传感器"]