【单选题】【消耗次数：1】
一个汉字的机内码与国标码之间的差别是（ ）。
①
前者各字节的最高二进制位的值均为1，而后者均为0
②
前者各字节的最高二进制位的值均为0，而后者均为1
③
前者各字节的最高二进制位的值各为1、0，而后者为0、1
④
前者各字节的最高二进制位的值各为0、1，而后者为1、0
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【简答题】
十六进制数0CB8转换成二进制数为[填空1]
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