送电线路中杆塔的水平档距为()。
A.相邻档距中两弧垂最低点之间的距离;
B.耐张段内平均档距;
C.杆塔两侧档距长度之和的一半;
D.相邻杆塔中心桩之间的水平距离。
参考答案:C
It ___ to be raining when we went to see him off at a railway station.
A.happened
B.had happened
C.took place
D.took
为人民服务是党的根本宗旨,()是检验党一切执政活动的最高标准。
A.科学发展
B.科学发展,以人为本
C.以人为本,执政为民