[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcfDezBuTbSbMjtMQlH6mVY1HUybo1nsNK15WuOF3JBY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":29,"type":63},[],"2024-04-14 16:34:29",138295964,[8,9,10,11],"x++,3*x","x*=x+1","2*x,x+=6","x*=(1+x)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},51,"34f6d4d513bb3d04561c6107387ec176","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd7215a6f9b18cc01f824b38b31b8c383.jpg","C语言程序设计(2024年春季)","work_33266224","3.运算符和表达式","设有定义:int x=3;,以下表达式中,值不为12的是( )",[21,31,36,41,46,55,64,74,83,92],{"answer":22,"createTime":23,"id":24,"options":25,"question":28,"source":29,"type":30},[],"2024-03-26 16:57:18",135705224,[26,27],"正确","错误","电力拖动系统是由电动机与负载两部分组成的,通常把电动机的电磁转矩与转速之间的关系称为机械特性,不同的电动机具有不同性质的机械特性,可以用数学形式表示成n = f (Te)","v1",3,{"answer":32,"createTime":23,"id":33,"options":34,"question":35,"source":29,"type":30},[],135705225,[26,27],"所谓电力拖动系统稳定运行是指系统在扰动作用下,离开原来的平衡状态,但仍然能够在新的运行条件达到平衡状态,或者在扰动消失之后,能够回到原有的平衡状态",{"answer":37,"createTime":23,"id":38,"options":39,"question":40,"source":29,"type":30},[],135705226,[26,27],"对于恒转矩负载,如果电动机的机械特性呈下垂曲线,系统是稳定的;反之,则不稳定.进一步分析可知,对于非恒转矩负载,如果电动机机械特性的硬度小于负载特性的硬度,该系统就能稳定运行",{"answer":42,"createTime":23,"id":43,"options":44,"question":45,"source":29,"type":30},[],135705227,[26,27],"电力拖动系统在电动机机械特性与负载转矩特性的交点上,并不一定都能够稳定运行,也就是说,Te = TL仅仅是系统稳定运行的一个必要条件,而不是充分条件",{"answer":47,"createTime":23,"id":48,"options":49,"question":53,"source":29,"type":54},[],135705228,[50,51,52],"Te-TL=0","dTe\u002Fdt-dTL\u002Fdt<0","不确定","对于一个电力拖动系统,稳定运行的充分必要条件是",1,{"answer":56,"createTime":57,"id":58,"options":59,"question":62,"source":29,"type":63},[],"2024-04-21 09:19:29",138295960,[9,11,60,61],"x++,2*x","2*x,x+=2","设有定义:int x=2;,以下表达式中,值不为6的是________",0,{"answer":65,"createTime":66,"id":67,"options":68,"question":73,"source":29,"type":63},[],"2024-04-14 16:34:26",138295961,[69,70,71,72],"1","0","true","非零值","表达式:10!=9的值是___",{"answer":75,"createTime":66,"id":76,"options":77,"question":82,"source":29,"type":63},[],138295962,[78,79,80,81],"4","12","3","11","设有 int x=11; 则表达式 (x++ * 1\u002F3) 的值是",{"answer":84,"createTime":66,"id":85,"options":86,"question":91,"source":29,"type":63},[],138295963,[87,88,89,90],"交换x和y中的值","把x和y按从大到小排列","把x和y按从小到大排列","无确定结果","设x和y均为int型变量,则以下语句:x+=y;y=x-y;x-=y;的功能是______",{"answer":93,"createTime":5,"id":6,"options":94,"question":19,"source":29,"type":63},[],[8,9,10,11]]