假如只想显示视图：EMPLOYEE_HIST的名字、视图的定义和视图定义的长度，请问应该使用以下SQL语句中的哪一个 A: SELECT B: * C: FROM D: user_views E: WHERE F: view_name=’EMPLOYEE_HIST’; G: SELECT H: view_name, text, text_length I: FROM J: user_views K: WHERE L: view_name=’EMPLOYEE_HIST’; M: SELECT N: view_name, text, text_length O: FROM VIEW P: user_obiects Q: WHERE R: view_name=’EMPLOYEE_HIST’; S: SELECT VIEW T: view_name, text, text_length U: FROM V: all_objects W: WHERE X: view_name=’EMPLOYEE_HIST’;

有如下类的定义，创建Employee对象正确的是（） public class Employee{ private int age; private String name; public void Employee(){ } public Employee(int age){ this.age = age; } public Employee(String name){ this.name = name; } } A: Employee e = new Employee( ) B: Employee e = new Employee(10); C: Employee e = new Employee(tom); D: Employee e = new Employee(10,"tom");

‎阅读以下程序，说明Company类和Employee类是 关系。‎‎public class Company{ private Employee employee; public Employee getEmployee(){ return employee; } public void setEmployee(Employee employee){ this.employee=employee; } //公司运作 public void run(){ employee.startWorking(); } }‎

下面关于hist命令叙述正确的是： A: hist(x)绘制向量x的频数直方图 B: hist(x)绘制数据x的频数统计表 C: hist(x)计算数据x的样本方差 D: hist(x,m)中参数m是一个标量，用于指定直方图中箱子的个数

有如下类的定义，创建Employee对象错误的是（） public class Employee{ private int age; private String name; public Employee(int age){ this.age = age; } public Employee(String name){ this.name = name; } public Employee(int age,String name){ this(age); this.name = name; } } A: Employee emp = new Employee(10); B: Employee emp = new Employee("Tom"); C: Employee emp = new Employee(); D: Employee emp = new Employee(10,"Tom");

class Employee; class Manager extends Employee; class Director extends Employee;

They are Mr. Jackson's ______. A: employees B: employee C: a employee D: an employee

Ahigh-highleaderintheOhioStatestudiesachievedthehighestratingswithrespectto________. A: both employee performance and satisfaction B: employee performance only C: employee satisfaction only D: employee performance for routine tasks only

Is the hero a student or an employee? A: An employee B: a student

Employee Handbook is also called an employee manual