【单选题】假设已经定义好了类Student,现在要定义类Derived,它是从Student类私有派生的,则定义Derived正确的写法是( )。
A.
class Derived:Student private{……};
B.
class Derived:Student{……};
C.
class Derived::Student{……};
D.
class Student: private Derived {……};
【单选题】《中华人民共和国教育法》、《中华人民共和国教师法》和《幼儿园工作规程》属于()
【单选题】有如下接口和类定义:interface Info{String getInfo(int a, int b);}public abstract class Student implements Info{}以下可以在类Student中正确定义的方法有哪两项
A.
public String getInfo(int m, int n){…}
B.
public void getInfo(int m, int n){…}
C.
protected String getInfo(int m, int n){…}
D.
public abstract String getInfo(int c, int d);
【单选题】It was so quick and easy. A fourteen-year-old boy in Scottsdale, Arizona, put his $50 bill on a color copying machine. Within seconds he transformed $50 into $550, and he was ready to shop.Twenty year...
A.
most children above the age of 14 can fake money
B.
new high technology makes money faking easier
C.
anyone who has a computer can fake money
D.
casual faking machines are called casual for the reason that no skills and planning are required
【单选题】设有下面两个类的定义: class Person { int id; String name; } class Student extends Person { int score; int getScore() { return score; } } 请问类 Person和类Student的关系是( )。
【单选题】在我国教育法律体系中,处于 “母法”地位的是( )。
【单选题】为了消除溶血,脂血或黄疸等对检测结果的影响,提高结果的准确性,可选用双波长法,有关双波长法的叙述错误的
B.
主波长用于待侧物质的测定,副波长用于消除可能产生的干扰
C.
副波长的选择原则为干扰物质在主波长和副波长的光吸收相等,而待侧物质有最小的吸光度