按照《国家电网公司输变电工程建设监理管理办法》规定，输电线路工程需进行监理质量旁站的作业工序及部位包括（）。

A.灌注桩钢筋笼入孔

B.基础混凝土浇筑

C.大跨越铁塔组立

D.导地线压接

In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the ______ between sending the notification and notification arriving at the source, thousands of additional ______ may arrive. In ATM network, a major tool for preventing ______ is ______ control. When a host wants a new virtual ______, it must describe the traffic to be offered and the service expected.

A．packets
B．cells
C．message
D．files