Violent _______ are rare. Instead, the existing system is slowly modified to suit fresh conditions, until in the end the impossible is achieved—a completely new system which still looks exactly like the old.
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【简答题】请在(7)~(9)处填写恰当的内容。 在Linux系统中配置域名服务器,该服务器上文件named.conf的部分内容如下: options { directory '/var/named'; }; zone ',' { type hint; file 'named.ca'; } zone 'localhost' IN { file 'localhost.zone' allow-update{non...