如果想将在小郭计算机上制作的演示文稿在小谢计算机上演示，而小谢计算机未安装PowerPoint应用程序，而且演示文稿中使用的链接文件或TrueType字体在小谢计算机上不存在，能保证此演示文稿在小谢计算机上的正常演示的操作是(19)。

(94)

(93)

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(91)

The　major　problem　with　E-mail　is　that　it　is(71)easy　to　use　that　people　can　become(72)with　messages(73)they　can　possibly　answer　in　a　day.　In　addition,　mail　boxes　require　some　management　to(74)messages　or　archive　those　that　might　be　required　later.　Senders　don't　always　know　about　your　E-mail　backlog　and　often　send(75)messages.

(89)

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Communication　protocols　are(66)connection-oriented　or　connectionless,(67)whether　the　sender　of　a　message　needs　to　contact　and　maintain　a　dialog　with　the　recipient　or(68)send　a　message　without　any,　prior　connect　and　with　the　hope　that　the　recipient　receives　everything.(69).These　methods(70)the　two　ways　that　communication　is　implemented　on　networks.

(86)