[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1LTEwWHydOOJT7CXlElFsey9ltceOHVca0SKky-enAo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2026-05-13 22:50:13",21747129,[8,9,10,11],"一个类中不可以有本类的对象","一个对象可以属于几个不同的类","一个类只能有一个对象","对象是类的一个具体实例(实体)",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},32,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","9d6d1621e2d44a8a952c8bd66ac7e0d9","第六章单元检测","以下关于类和对象叙述正确的是( )",[21,33,43,53,56,65,73,82,88,97],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2026-05-23 12:11:08",21747126,[26,27,28,29],"一个类最多可以实现两个接口","如果一个抽象类实现某个接口,那么它必须要重写接口中的全部方法","如果一个非抽象类实现某个接口,那么它可以只重写接口中的部分方法","允许接口中只有一个抽象方法","下列哪个叙述是正确的","v1",0,{"answer":34,"createTime":35,"id":36,"options":37,"question":42,"source":31,"type":32},[],"2024-04-02 23:10:50",21747127,[38,39,40,41],"public int f(){return 100+M;}","int f(){return 100;}","public double f(){return 2.6;}","public abstract int f()","将下列(A,B,C,D)哪个代码替换下列程序中的【代码】不会导致编译错误.interface Com { int M = 200; int f();}class ImpCom implements Com { 【代码】}",{"answer":44,"createTime":45,"id":46,"options":47,"question":52,"source":31,"type":32},[],"2026-05-09 07:29:42",21747128,[48,49,50,51],"class","private","extends","public","定义类头时,不可能用到的关键字是( )",{"answer":54,"createTime":5,"id":6,"options":55,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":57,"createTime":23,"id":58,"options":59,"question":64,"source":31,"type":32},[],21747130,[60,61,62,63],"float A a","public A a=A( )","A a=new int( )","static A a=new A( )","设 A为已定义的类名,下列声明A类的对象a的语句中正确的是( )",{"answer":66,"createTime":67,"id":68,"options":69,"question":72,"source":31,"type":32},[],"2023-05-21 14:03:38",21747131,[49,70,71,51],"protected","private或者protected","在使用interface 声明一个接口时,只可以使用哪个修饰符修饰该接口?或者",{"answer":74,"createTime":23,"id":75,"options":76,"question":81,"source":31,"type":32},[],21747132,[77,78,79,80],"public class A extends Object{…… }","final class B{……}","class C{……}","void class D{……}","下列类的定义,错误的是( )",{"answer":83,"createTime":5,"id":84,"options":85,"question":87,"source":31,"type":32},[],21747133,[50,48,86,51],"interface","定义一个接口时,下列哪个关键字用不到",{"answer":89,"createTime":23,"id":90,"options":91,"question":96,"source":31,"type":32},[],21747134,[92,93,94,95],"构造函数的函数名与类同名","在一个类中,只能定义一个构造函数","创建对象时构造函数自动被调用","构造函数没有类型","下列说法中错误的是( )",{"answer":98,"createTime":67,"id":99,"options":100,"question":105,"source":31,"type":32},[],21747135,[101,102,103,104],"class x","class x extends y","class x implements y1,y2","public class x extends x1,x2","下列类定义中,不正确的是A. B.class x extends y C.class x implements y1,y2 D .public class x extends x1,x2"]