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【单选题】
上转型对象的特点是( )
A.
不能操作子类新增的成员变量
B.
不能调用子类新增的方法
C.
可以访问子类继承或隐藏的成员变量,也可以调用子类继承的方法或子类重写的实例方法
D.
以上都是
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【单选题】借助继承,我们可以创建其他类的派生类。那么在PHP中,子类最多可以继承几个父类?
A.
1
B.
2
C.
3
D.
取决于系统资源
【判断题】GSM网络由TDMA帧基本单元构成,帧长4.615us。()
A.
正确
B.
错误
【简答题】Even though there are many benefits to telework, there are also some drawbacks. The biggest concern employers have about telecommuting is lack of control. If the employee is not in the office, manager...
【单选题】If employee is an array of objects with a public member function named setHoursWorked, which of the following statements correctly calls that function for the employee object in array element 5?
A.
employee.setHoursWorked[5] = 40;
B.
employee[5].setHoursWorked = 40;
C.
employee.setHoursWorked[5](40);
D.
employee[5].setHoursWorked(40);
【单选题】The principle that a reward will motivate only if it’s valued by the employee is key to the _____ theory of motivation.
A.
equity
B.
enrichment
C.
goal-setting
D.
expectancy
【判断题】Whistle-blowing is ethical if the employee has valid reasons to believe that revealing the wrongdoing to the public would result in changes necessary to remedy the situation.
A.
正确
B.
错误
【单选题】地球表面中覆盖面积最多的岩石是()。
A.
灰岩
B.
沉积岩
C.
火成岩
D.
变质岩
【判断题】< 人民法院对上诉案件的审理,原则上实行开庭审理,案件事实清楚时,可以实行书面审理。
A.
正确
B.
错误
【单选题】If an employee is not ______ the requirement of the boss, he or she would usually be fired.
A.
up at
B.
up for
C.
up to
D.
up in
【单选题】If an employee observes unethical behavior in an organization, the employee is first obligated to ________.
A.
report the behavior to the police
B.
report the behavior to his or her supervisor
C.
report the behavior to the Securities and Exchange Commission
D.
follow the company's policies for unethical behavior
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