[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f734e9l4FlhTnQi6HYIucKRSfvV2NENrstkGS2LOFb0w":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":23,"type":24},[],"2023-05-09 05:39:42",968295933,[8,9,10,11],"8V","6V","4V","2V",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000010882","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff4d118b53baeb8281dde2c07442cb08e.png","[共享课]电子电路实验（浙江大学）","54514696","第六章单元测试","在如图所示的施密特触发器电路中,当Vcc=12V时,其回差电压ΔVT是多少伏?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F69ec38de0e11a2e17f5268e8e426a8d6.png\">",[20,25,34,43,51],{"answer":21,"createTime":5,"id":6,"options":22,"question":18,"source":23,"type":24},[],[8,9,10,11],"v2",0,{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":23,"type":24},[],968295951,[29,30,31,32],"低电平持续时间t大于暂稳态持续时间tw、周期大于暂稳态持续时间tw","低电平持续时间t小于暂稳态持续时间tw、周期大于暂稳态持续时间tw","低电平持续时间t小于暂稳态持续时间tw、周期小于暂稳态持续时间tw","低电平持续时间t大于暂稳态持续时间tw、周期小于暂稳态持续时间tw","在如图所示的单稳态触发器电路中,为使每个输入的低电平脉冲都能有效触发,对输入脉冲的低电平持续时间和周期有何要求?( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9ba13b0da87ec35f32a07167a7096d91.png\">",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":23,"type":24},[],968296004,[38,39,40,41],"5.9KHz","9.3KHz","14KHz","11KHz","在如图所示的多谐振荡器电路中,若R1=R2=5.1KΩ,C=0.01μF,Vcc=12V,这电路的振荡频率是:( )\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8f538b985137a1fb14547d3d211217de.png\">",{"answer":44,"createTime":5,"id":45,"options":46,"question":50,"source":23,"type":24},[],968296033,[9,47,48,49],"3V","5V","2.5V","在用555时基电路接成的施密特触发器电路中,当Vcc=9V、外接控制电压VCO=5时,其回差电压ΔVT是多少伏?( )",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":23,"type":24},[],968296034,[55,56,57,58],"升高","降低","不变","不确定","在555时基电路接成的多谐振荡器电路中,当5脚外接控制电压VCO升高时,电路的振荡频率:( )"]