The paper discusses the requirements of professionalcare of certified public accountants,professionalcare and legal obligation,and how to achieve professionalcare,arousing public reflection.

Several principles how to select intelligent module in switch industry are discussed,including correct discriminating applying object,selecting network topology construction,communication way,communication rules and computer system of the background.

Since 2005,PRC has made eight adjustments successively to the oil product price,the frequency and scope of which influences the product price of the related industries in which the oil serves.

And in such an era that competitions are increasingly fierce, the new hot spots have continuous emergences, the news explodes and information has redundancy, the pace of development on public relations industry is unprecedented.