关于为公司债券提供担保，下列说法正确的有( )。

A．担保范围包括债券的本金及利息、违约金、损害赔偿金和实现债权的费用

B．以保证方式提供担保的，应当为连带责任保证，且保证人资产质量良好

C．设定担保的，担保财产权属应当清晰，尚未被设定担保或者采取保全措施，且担保财产的价值经有资格的资产评估机构评估不低于担保金额

D．公司债券的发行必须提供担保

In low-speed network，it is usually adequate to wait for congestion to occur and then react to it bytelling the source of packets to slow down．In high-speed networks，this approach often works poorly，because in the (71) between sending the notification and notification arriving at the source，thousands of additional (72) may arrive．In ATM network，a major tool for preventing (73) is (74) control．When a host wants a new virtual (75) ，it must describe the traffic to be offeredand the service expected．

（75）处填（）。

A．path

B．rout

C．circuit

D．way