[多选题]高压电缆布置应注意事项 （）
A.布线方案应有助于消除不正确的安装和错误的线束路线
B.走线应避免形成大的电磁环
C.高低压平行走线距离间隔须足够，如果实际境况确实无法达到此要求，高低压需相互垂直 走线
D.车辆在发生碰撞情况下，须确保线束不会受到挤压，以防线束破裂造成短路。

Thirty-five years after computer scientists at UCLA linked two bulky computers using a 15-foot gray cable, testing a new way for exchanging data over networks, what would ultimately become the Internet remains a work in progress.
University researchers are experimenting with ways to increase its capacity and speed. Programmers are trying to imbue Web pages with intelligence. And work is underway to re-engineer the net- work to reduce spam and security troubles.
(46) All the while threats loom: critics ware that commercial, legal and political pressures could hinder the types of innovations that made the Internet what it is today.
Stephen Crocker and Vinton Cerf were among the graduate students who joined UCLA professor Len Kleinrock in an engineering lab on Sept. 2, 1969, as bits of meaningless test data flowed silently between the two computers. By January, three other "nodes" joined the fledgling network.
(47) Then came e-mail