【判断题】二极管PN结的单向导电性是指PN结外加正向电压时,PN结表现为低阻态,处于正向导通状态,其正向压降只有1V左右;
【单选题】Miss Li often looks after ____(he ).
【多选题】public abstract class Shape { private int x; private int y; public abstract void draw(); public void setAnchor(int x, int y) { this.x = x; this.y = y; } } Which two classes use the Shape clas...
A.
public class Circle implements Shape { private int radius; }
B.
public abstract class Circle extends Shape { private int radius; }
C.
public class Circle extends Shape { private int radius; public void draw(); }
D.
public abstract class Circle implements Shape { private int radius; public void draw(); }
E.
public class Circle extends Shape { private int radius;public void draw() {/* code here */} }
F.
public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }
【多选题】在内部控制五个目标中,一般而言,治理结构主要服务于内部控制的战略目标和合法合规目标,内部机构主要服务于内部控制的( )。
【单选题】某商场发布广告称,自广告发布之日起10日内购物满2000元者,有资格参加本商场举办的抽奖活动,中奖者一等奖为25英寸彩电一台,此外还规定了二等奖和三等奖的奖品,中奖当日现场。该广告为要约邀请。( )