Between now and 2005,{{U}} (21)
{{/U}}services will become commonplace. Business and economy-ties Web
services will be introduced; and consumers will{{U}} (22) {{/U}}their
digital identities. Not only will the Net support a variety of new access
devices, but it will also become the primary vehicle for voice, data and
video{{U}} (23) {{/U}}. Already, a group of communication giants,
including AT&T,{{U}} (24) {{/U}}an alliance called Embedded Internet,
which aims to accelerate the market for globally networked, intelligent devices
in homes, offices and factories worldwide. Putting everything and everyone on the Net will open up new commercial opportunities For example, whe A. A.had B.have had C.had had D.have [判断题]新参加电气工作的人员、实习人员和临时参加劳动的人员(管理人员、非全日制用工等),应经过安全知识教育后,方可到现场单独工作。
A.正确 B.错误 [单项选择]{{B}}第二篇{{/B}}
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