A. 并行的; B. 串行的; C. 并行和串行; D. 以上都不对;
A. DataOutputStream; B. FileOutputStream; C. BufferedOutputStream; D. PipedOutputStream;
A. FileOutputStream; B. RandomAccessFile; C. PipedOutputStream; D. BufferedOutputStream;
A. import java.io.*; B. include java.util.*; C. import java.util.*; D. include java.io.*;
A. FileWriter B. FileReader; C. FileInputStream; D. ObjectInputStream;
A. 字符流类; B. 字节流类; C. 对象流类; D. 非流类;