子网掩码255.255.192.0的二进制表示为()
A:11111111 11110000 0000000 00000000
B:11111111 11111111 00001111 00000000
C:11111111 11111111 11000000 00000000
D:11111111 11111111 11111111 00000000
出自:H3C