有的旅游者到某地后，希望亲友随团活动甚至到外地去旅行游览，导游员应先征得领队和旅游团其他成员的同意。()
A．正确
B．错误
参考答案：对
103 000用科学记数法表示为______．
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．
（74）处填（）。
A．flow
B．admission
C．traffic
D．time
