一个三角形的一边长是10,另一边长是7,那么它的周长L的取值范围是( )。
20<L<34
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 (1) between sending the notification and notification arriving at the source, thousands of additional (2) may arrive. In ATM network, a major tool for preventing (3) is (4) control. When a host wants a new virtual (5) ,it must describe the traffic to be offered and the service expected.
1()
A.interval
B.time
C.slot
D.delay
计算题:200g20%的氨水需加多少,才能成为10%的氨水?