1. 在面向对象编程中,一个类型由什么组成?( )A publicB identifierC dataD operations 2. 下面哪些是面向对象的基本特性:( )A 多态 B 继承 C 封装 D 接口3. 在java中访问权限的限制由严格到宽松依次是:( )A publicB protectedC privateD default(no modifier)4. 以下方法声明正确的有:( )A public static synchronized void writeLog(String msg)B synchronized public static writeLog(String msg)C public final abstract void writeLog(String msg)D final public void writeLog(String msg)E abstract synchronized void writeLog(String m