Every valid character in a computer that uses even(71)must always have an even n
Every valid character in a computer that uses even(71)must always have an even number of 1 bits．(71)
A．parity
B．check
C．test
D．compare
正确答案：A解析：计算机中采用偶校验的每个字符一定含有偶数个1。
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