钢筋对接焊优良品的要求是( )。

A．接头弯折处不大于4°

B．钢筋轴线偏移不大于0.1倍钢筋直径

C．无横向裂纹和烧伤，焊点均匀

D．A+B+C

An Intranet is (71) the application of Internet technology within an internal or closed user group．Internets are company (72) and do not have a (73) connection to the Internet．Used properly an Internet is highly effective corporate tool，capable of regularly (74) information to empower the workforce with the information needed to perform their roles．Used in this way，Internet represent a step towards the (75) office．

75（）

A．painless

B．painness

C．paperless

D．paperness