There are several C# test questions, all of which are basic

Among the following characteristics of classes, the one that can be used to easily reuse existing code and data is ( ). A. Polymorphism B. Encapsulation C. Inheritance D. Abstraction Answer: http://hovertree.com/tiku /bjaf/a3k6pgq5.htm A set of identifiers that can be used as user identifiers for C# programs is (). A. void define Word B. a3_b3 _123 YN C. for -abc Case D. 2a D

Among the following characteristics of classes, the ones that can be used to easily reuse existing code and data are (). ​ A. Polymorphism
B. Encapsulation
C. Inheritance
D. Abstract Answer: http://hovertree.com/tiku/bjaf/a3k6pgq5.htm The set of identifiers that can be used as user identifiers for C# programs is ( ). ​ A. void define Word
B. a3_b3 _123 YN
C. for -abc Case
D. 2a DO sizeof Answer: http://hovertree.com/tiku/bjaf/1a65dieg.htm

• The Object class in .NET is the base class of all classes, and user-defined classes inherit this class by default. The following options are not methods of the Object class ( ).
• http://hovertree.com/shortanswer/bjaf/9vqxwuda.htm
• In C#, which of the following statements should be used to define a variable representing a string? ​ A. CString str;
  B. string str;
  C. Dim str as string
  D. char * str;
• Answer: http://hovertree.com/shortanswer/bjaf/agub58q5.htm
• More: http://hovertree.com/tiku/

Technical articles: http://www.cnblogs.com/sosoft/p/kaifajishu.html