对于水的代谢下列说法错误的是（）。

A.水的排泄主要依赖于抗利尿激素醛固酮和肾的调节

B.心钠素对电解质和水的重吸收有调节作用

C.低渗性失水属于缺钠性低钠血症

D.低渗性失水时，血尿素氮／肌酐比值大于20：1

E.以上都不是

An Intranet is (71) the application of Internet technology within an internal or closed user group．Internets are company and not do not have a (72) connection to the Internet．Usedproperly an Internet is highly effective corporate tool，capable of regularly (73) information toempower the workforce with the information needed to perform their roles．Used in this Way，Internet represent a step towards the (74) office．

A．common

B．shared

C．special

D．specific