等高档距
参考答案：
两相邻杆塔导线悬挂点几乎在同一水平面上的档。
国家烟草专卖局对卷烟零售价格上限的规定是什么？
( ) heavy commitments, they are not in a position to accept fresh order.
A．Owe to
B．Due to
C．Owing for
D．Duing to
