出质人对质押权利占有的合法性，包括（）。 ["权利凭证上的所有人与出质人是否为同一人","出质人是否具有处分有价证券的权利","权利凭证是否符合相关规定","权利凭证是否到期","权利凭证是否已经质押过"]
You have a computer that runs Windows XP Professional. You connect one local print device and install a printer. You share the printer. You need to give a user the ability to manage all new print jobs submitted to the printer. Your solution must prevent the user from installing additional local printers. What should you do?（） ["In the printer properties, assign the Manage Printers permission to the user.","In the printer properties, assign the Manage Documents permission to the user.","From the Local Users and Groups snap-in, add the user to the Power Users group.","From the Local Users and Groups snap-in, add the user to the Replicators group."]
何谓膜分离技术？在酶的生产中有何应用？
简述公司法的精髓。
信息系统运行过程的人员大致可以分为两类：（）、（）。
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