Because web servers are (31) and application independent, they can send or request data from legacy or external applications including databases. All replies, once converted into (32) mark-up language, can then be transmitted to a (33) . Used in this way, Intranets can offer (34) desktop support costs, easy links with legacy applications and databases and, above all, (35) of use.

A．machine

B．IP

C．platform

D．network

劳动立法的开端是什么？