[单选题] 线路位置称号指上线、中线或下线和( )的左线或右线。
A. 面向送电侧
B. 面向受电侧
C. 面向线路杆塔号增加方向
D. 面向线路杆塔号减小方向

{{B}}The Building of the Pyramids{{/B}}
The oldest stone buildings in the world are the pyramids.{{U}} (46) {{/U}}There are over eighty of them scattered along the banks of the Nile, some of which are different in shape from the true pyramids. The most famous of these are the “Step” pyramid and the “Bent” pyramid.
Some of the pyramids still look much the same as they must have done when they were built thousands of years ago. Most of the damage suffered by the others has been at the hands of men who were looking for treasure or, more often, fore stone to use in modern buildings.{{U}} (47) {{/U}}These are good reasons why they can still be seen today, but perhaps the most important is that they were planned to last for ever.
{{U}} (48) {{/U}}However, there are no writings or pictures to show us how the Eg