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杆塔调整垂直后，在符合哪些条件后方可拆降临时拉线？

答案

参考答案：

（1）铁塔的底脚螺栓已固定；（2）永久拉线已紧好；（3）无拉线电杆已回填土夯实；（4）安装新架空线；（5）其他有特殊规定者，依照规定办理。

选择题

李鸿章1872年在上海创办轮船招商局，“前10年盈利，成为长江上重要商局，招商局和英商太古、怡和三家呈鼎立之势”。这说明该企业的创办（   ）

A．打破了外商在中国航运业的垄断

B．阻止了外国对中国的经济侵略

C．标志着中国近代化的起步

D．成为洋务派创办的最大的民用工业
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单项选择题

Rapid advances in computer and communication technologies have resulted in the (71) merger of these two fields. The lines have bluned among computing, switching, and digital transmission equipment, and the same digital techniques are being used for data, voice, and image transmission. Merging and evolving technologies, coupled with increasing demands for efficient and timely collection, processing, and (72) of information, are leading to the development of (73) that transmit and process all types of data. The ultimate goal of this evolution is something its proponents-some of the most powerful forces in the computing and telecommunications industries-call the (74) .The (74) will be a worldwide public telecommunications network that will deliver a wide variety of services. The (74) will be defined by the standardization of user interfaces, and will be implemented as a set of digital switches and paths supporting a broad range of traffic types and providing (75) processing services. Inpractice, there will be multiple networks, implemented within national boundaries, but from the user’s point of view there will be a single, uniformly accessible worldwide network.

A．specific

B．dissemination

C．protocols

D．communication
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