Is Columbine Victims Death Photos The Next Big Thing? Experts Weigh In High School Honored 22 Years After Tragedy Cbs Colorado

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65535是正数，故补码与其原码一样。以16位为例，二进制为 1111111111111111，十六进制为 ffff。 2进制书写繁琐，复杂，易错；由于16进制的基数是2的4次幂，所以16进制可以实.

After the killing How parents of attackers cope BBC News

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