A．ATM技术 B．光纤接入技术 C．多媒体技术 D．SDH技术_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

A．ATM技术

B．光纤接入技术

C．多媒体技术

D．SDH技术

答案

参考答案：A

解析：[分析] 宽带ISDN 的目标是实现4个层次上的综合，即综合接入、综合交换、综合传输和综合管理。宽带ISDN 的核心技术是采用异步传输模式ATM ，实现高效的传输、交换和复用。

完形填空

短语填空（注意形式）（每个2分, 共10分.）

refer to … as … in respond to be different from
on average consist of make a difference

小题1:This club _________________ more than 200 members.
小题2: It could _________________ between missing your train and getting to work on time.
小题3:_________________their hospitality, we wrote a thank-you note.
小题4: In China, men still earn more than women _________________.
小题5:He doesn’t like to be called Tom, but prefers to _________________ 'Doctor Khee'.

问答题简答题

简述三种以上增加日光温室光照的方法。