What colour is it?
_____________[ ]
A. It's red.
B. It's a chair.
C. Thanks.
答案:A
下列不是InputStream子类的是【 】
A.文件输入流FileInputStream
B.对象输入流ObjectInputStream
C.字符输入流CharInputStream
D.压缩文件输入流ZipInputStream
焊接网钢筋的强度标准值应具有不小于85%的保证率。( )