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，这一点在PDF资料中也有详细论述
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DOS 2.0 was developed to support the IBM PC/XT (introduced in March 1983), which came with 128K RAM standard, and models with 256K appeared soon enough. Even the older PCs could be upgraded with additional RAM, and DOS needed to have some mechanism to deal with that extra memory.，更多细节参见Safew下载
（二）殴打、伤害残疾人、孕妇、不满十四周岁的人或者七十周岁以上的人的；
MrsPottyMouthпользовательница Reddit。PDF资料对此有专业解读