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．interval
B．time
C．slot
D．delay

人性化管理意味着（）

A、管理更贴近人性

B、提升人的工作潜能

C、人作为知识、智慧的主体变得越来越重要

D、宗旨是为了克服员工的单调感