[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fUw3hI3f20jPEwRVZlsn4D85jS3z1M6DzsNjxrdh4Pw8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-11-05 20:44:12",103260306,[8,9,10,11],"升高","不变","先降低后升高","降低",{"courseId":13,"courseImg":14,"courseName":15},"e484ac298144aa5f0a81fcfbe3ffb991","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F913e655af9d87c408103501839cafe4f.jpg","离心泵实验（基本性能\u002F串联\u002F并联）","对于后弯型叶片的离心泵,当流量减小时,其压力会( )",[18,29,38,47,56,65,74,83,86,91],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],103260281,[22,23,24,25],"9.88","9.48","9.28","9.68","实验中经测定,位置能是固定值,在原理讲述中已经说明,而压力表读数为0.093MPa,真空表读数为0.002MPa,水的密度1000kg\u002Fm3,则此时水泵的扬程为( )m","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],103260284,[33,34,35,36],"串联状态","并联状态","关闭状态","打开状态","在离心泵综合性能试验装置中,阀门的阀杆(操作手柄)处于与管道平行状态时,它是处于( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],103260288,[42,43,44,45],"文丘里流量计","磁力传导的涡流流量计","孔板流量计","电磁流量计","本离心泵综合性能实验装置,其流量的测定采用的是( )",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],103260292,[51,52,53,54],"就是通过测定各个工作点,然后将这些点平均分布于所绘制的平滑的性能曲线的两侧","就是通过测定各个工作点,然后将这些点用折线连接起来,就得到了实验结果的性能曲线","无法回答","无答案","本次实验绘制性能曲线,实质上就是( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],103260295,[60,61,62,63],"323.60","228.70","285.90","339.20","本次实验的离心泵实验装置,假定原动机(电动机)的效率为80%,对应测量该电动机功率表的读数:424W;'原动机与水泵通过对轮连接,联轴器效率可以认为是100%,而水泵的&middot;为:87.8%;容积效率为:87.8%,则水泵的轴功率=( )W",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":27,"type":28},[],103260299,[69,70,71,72],"实际测量的最小流量","实际测量的最大流量","以某一个整数","随便选择一个数","在本实验中,在给定的坐标系中绘制扬程与流量关系曲线时,横坐标最好以0.00作为原点的数值,以( )作为坐标的最大值",{"answer":75,"createTime":5,"id":76,"options":77,"question":82,"source":27,"type":28},[],103260302,[78,79,80,81],"为了提高系统的扬程","为了提高保证在紧急情况下能够有备用泵","为了提高保证在离心泵检修时能正常工作","为了提高系统的流量","离心泵并联工作的目的是",{"answer":84,"createTime":5,"id":6,"options":85,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":87,"createTime":5,"id":88,"options":89,"question":90,"source":27,"type":28},[],103260310,[81,80,79,78],"离心泵串联工作的目的是",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":27,"type":28},[],103260314,[95,96,97,98],"离心泵各个参数分别与流量之间的关系曲线","离心泵各个参数分别与扬程之间的关系曲线","离心泵各个参数分别与转速之间的关系曲线","离心泵各个参数分别与效率之间的关系曲线","所谓离心泵的综合性能曲线,就是指"]