2. 计算机
  3. ___________operating systems are used for handheld devices such as smart-phones．

___________operating systems are used for handheld devices such as smart-phones．

admin2018-04-19  63
问题 ___________operating systems are used for handheld devices such as smart-phones．
选项 A、Mobile
B、Desktop
C、Network
D、Timesharing
答案A
解析 移动操作系统用于智能手机等手持设备。
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