Which of the following is the order of applying object-oriented concept in programming A: instance creating — class defining — use attributes or methods through the instance B: class defining — instance creating — use attributes or methods through the instance C: instance creating — use attributes or methods through the instance — class defining D: class defining — use attributes or methods through the instance —instance creating

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2022-06-04 问题

Which of the following is the order of applying object-oriented concept in programming A: instance creating — class defining — use attributes or methods through the instance B: class defining — instance creating — use attributes or methods through the instance C: instance creating — use attributes or methods through the instance — class defining D: class defining — use attributes or methods through the instance —instance creating

2022-06-01 问题

Every instance of an abstract type is an instance of some concrete subtype.

2021-04-14 问题

For instance:

2022-06-27 问题

定义类的关键字是 ( ) A: Class B: class C: Instance D: instance

2021-04-14 问题

【单选题】下面的代码实现了设计模式中的()模式 public class A{ private A instance; private A(){} public static Aget Instance{ if(A==null) instance = new A(); return instance; } } A. Factory B. AbstractFactory C. Singleton D. Builder

【单选题】下面的代码实现了设计模式中的()模式 public class A{ private A instance; private A(){} public static Aget Instance{ if(A==null) instance = new A(); return instance; } } A. Factory B. AbstractFactory C. Singleton D. Builder

2022-06-15 问题

管桩新国家标准的发布日期和实施日期分别为（）。 A: 2009/03/28；2010/03/01 B: 2010/01/01；2011/01/01 C: 2001/01/01；2012/03/01 D: 2008/07/01；2009/05/01

2022-06-08 问题

下列数据中，（）是日期型常量。 A: {^2005/01/01} B: "2005/01/01" C: 2005/01/01 D: 2005-01-01

2022-06-01 问题

中国大学MOOC: There are following business statements for an information system:①A customer submit 0 or more orders;②An order can only be submitted by one customer. There are two classes in the system “Customer” and “Order”. For each instance of Order Class, there are instance(s) of Customer Class; while for each instance of Customer Class, there are instance(s) of Order Class.

中国大学MOOC: There are following business statements for an information system:①A customer submit 0 or more orders;②An order can only be submitted by one customer. There are two classes in the system “Customer” and “Order”. For each instance of Order Class, there are ____ instance(s) of Customer Class; while for each instance of Customer Class, there are ____ instance(s) of Order Class.

2022-06-03 问题

下列比例中表示缩小比例的是（）。 A: 02:01 B: 01:02 C: 05:01 D: 01:01

2022-06-09 问题

下列比例中表示放大比例的是（）。 A: 01:01 B: 02:01 C: 01:02 D: 01:05

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