题目内容

Tony, would you go and see if Sam has any difficulty ____ his tape recorder?

A. to fix
B. fixing
C. for fixing
D. fix

查看答案

搜索结果不匹配？点我反馈

更多问题

“Why isn't Nancy going to meet us?”“It's my fault. I forgot all about ____ her.”

A. telephoning to
B. to telephone
C. to telephone to
D. the telephoning to

光纤作为传输介质，具有以下的优势

A. 保密性高
B. 传输的速率高
C. 传输距离长
D. 衰减很小

按照接入网室外传输设施中是否含有源设备，光接入网可分为（）和（）两种网络。

A. 电信管理网
B. 有源光网络
C. 无源光网络
D. 用户驻地网

Write a note to your teacher to ask for two periods’ leave and list your reason.