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【单选题】
根据下面材料，回答题： 某电信运营商面对激烈的市场竞争，在网络与业务发展上制定了下列发展战略： （1）全面建设高速全IP骨干网络; （2）在传统话音业务上通过制定资费套餐为用户提供大量优惠，提升用户忠诚度; （3）对个人客户重点发展手机音乐、移动上网、手机广告等业务; （4）对家庭客户，将话音业务、高速互联网接入和视频服务进行组合，提供整体家庭娱乐方案; （5）对企业客户致力于提供从简单通信方案到网络应用建设的全方位服务，重点发展局域网建设、主机托管、企业建站、办公系统、数据管理、电子商务平台等服务内容，并逐渐向整体方案和标准化体系过渡。 该电信运营商的高速全IP骨干网络是基于（ ）技术的。 查看材料A.
电路交换
B.
报文交换
C.
高速电路交换
D.
高速分组交换
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】__ the new technology into the factory was not an easy job.
A.
Introducing
B.
Introduce
C.
Having introduced
D.
To have introduced
【单选题】Production at the factory was________for two hours because there was no electricity. [ ]
A.
interrupted
B.
disturbed
C.
missed
D.
lost
【简答题】The water in the river (pollute) ______ since the factory was put into production.
【单选题】The _______ cause of laying off skilled workers in the factory was bad management.
A.
negative
B.
negligible
C.
prevalent
D.
prime
【单选题】The workers were made when the factory was restructured.
A.
redundancy
B.
redundant
C.
layoff
D.
lay off
【简答题】The instruction of 'live in the moment' in yoga class is hard to achieve because humans have the memory of the past.
【单选题】After the explosion, the factory was a ______of total confusion.
A.
situation
B.
scene
C.
view
D.
show
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