[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fVMxJjnxloxzGtA4fz5KJV12CWEqs7_cy9s5DWfLHgLE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":23,"type":106},[],"2025-12-25 15:17:13",286145958,[],{"courseId":9,"courseImg":10,"courseName":11},"c5d9767d8b4bb36601ef4fc610c2efd1","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F346de954a9049d0d0e531b23def0a7b5.JPG","化工单元操作技术","7.什么是显热,潜热",[14,25,34,43,52,61,70,79,88,97],{"answer":15,"createTime":5,"id":16,"options":17,"question":22,"source":23,"type":24},[],286145803,[18,19,20,21],"500","1250","1150","1900","某设备进、出口测压仪表中的读数分别为p1(表压)=1200mmHg(1mmHg=133.322Pa)和p2(真空度)=700mmHg,当地大气压为750mmHg,则两处的绝对压力差为( )mmHg","v1",0,{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":23,"type":24},[],286145805,[29,30,31,32],"动能","位能","静压能","总机械能","流体流动时的摩擦阻力损失hf所损失的是机械能中的( )项",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":23,"type":24},[],286145807,[38,39,40,41],"流量","质量流量","体积流量","质量流量和体积流量","气体在管径不同的管道内稳定流动时,它的( )不变",{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":23,"type":24},[],286145809,[47,48,49,50],"流动参数与时间变化有关,与位置无关","流动参数与时间和位置变化均无关","流动参数与时间变化无关,与位置有关","流动参数与时间变化和位置变化都有关","稳定流动是指( )",{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":23,"type":24},[],286145811,[56,57,58,59],"流速降低","流量降低","压力降低","压力增大","流体阻力的外部表现是( )",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":23,"type":24},[],286145814,[65,66,67,68],"成正比","与管径平方成正比","与管径平方成反比","无一定关系","在稳定流动系统中,液体流速与管径的关系( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":23,"type":24},[],286145816,[74,75,76,77],"恒截面、变压差","恒压差、变截面","变截面、变压差","变压差、恒截面","孔板流量计是( )式流量计",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":23,"type":24},[],286145818,[83,84,85,86],"0.5","2倍","4倍","8倍","当流量V保持不变时,将管道内径缩小一半,则Re是原来的( )",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":23,"type":24},[],286145820,[92,93,94,95],"静力学方程式","连续性方程式","柏努利方程式","阻力计算式","确定设备相对位置高度的是( )",{"answer":98,"createTime":5,"id":99,"options":100,"question":105,"source":23,"type":24},[],286145822,[101,102,103,104],"湍流流速>层流流速","流道截面大的为湍流,截面小的为层流","层流的雷诺数","层流无径向脉动,而湍流有径向脉动","层流与湍流的本质区别是( )",4]