【简答题】建立一个千兆以太网( 1Gbps ),电缆长为 2km,其中无中继器。信号在电缆中 的传输速度为200000km/s. 问帧的最小长度为多少?
【单选题】At the left part electrode showed in the present image, it can be observed indicator electrode known in the group of
A.
metallic indicator electrode
【简答题】垂直运输清单工程量计量单位为m2时,指_______________。
【单选题】a ship is said to drag if the anchor ____
A.
will prevent the movement of the ship
B.
will not move over the bottom
C.
will hold her in position
D.
will not hold her in position
【单选题】Does a wire feeder feed stick- electrode?
【简答题】以太网中的 A、B主机通过 1000m长的链路直接相连,若网络最小帧长度为 1500Byte、信号传播速率为 2×10^8 m/s,在不考虑处理延迟情况下计算该网络的数据传输速率。 (要求写出计算过程 )
【单选题】The inner reference electrode of glass electrode is ______________