【简答题】材料一: 1841年12月,曾担任过美国总统的亚当斯在马萨诸塞州历史协会发表演说,为英国挑起侵华战争辩解,称“战争的原因是叩头”,即“中国妄自尊大”,不愿与西方国家平等交 往。 材料二 : “英国的大炮破坏了皇帝的权威,迫使天朝帝国与地上的世界接触。与外界完全隔绝曾是保 存旧中国的首要条件,而当这种隔绝状态通过英国而为暴力所打破的时候,接踵而来的必然是解体的过程,正如小心保存在密闭棺材里的木乃伊一...
【单选题】下列有关 Java多态性的说法中,错误的是________ 。
A.
在一个类的设计中,允许出现多个同名的成员方法,从而构成方法重载
B.
在子类的设计中,既可以通过方法重载也可以通过方法覆盖实现多态
C.
父类引用可以指向子类对象,从而通过动态绑定实现多态
【单选题】You decide to take a vacation and the trip costs you 2,000. While you are on vacation, you do not go to work where you could have earned $750. In terms of dollars, the opportunity cost of the vacation...
【单选题】you decide to take up, you should try to make it a success.
【单选题】you decide to take up , you should try to make it a success .
【单选题】下列对Java特性的描述中,错误的是:
A.
Java类的构造方法没有返回值,因此必须声明为void
【单选题】You decide to take a vacation and the trip costs you $2,000. While you are on vacation, you do not go to work where you could have earned $750. In terms of dollars, the opportunity cost of the vacatio...
【判断题】3.Sometimes banks allow you to withdraw more money than what is available in your account. This is called overdraft. If you decide to take a loan from a bank, you will have to show the bank your go...