【简答题】A frame of 1500 bytes travel through five switches along the path. Each link has a bandwidth of 100 Mbps, a length of 100 m, and a propagation speed of 2 × 10 8 m/sec. Assuming a queuing and processin...
【判断题】个人计算机采用 PPPoE 拨号,使用静态 IP 地址接入 Internet 。( )
【单选题】设 V ={ x =( x 1 , x 2 ,..., x n )| x 1 + x 2 +...+ x n =0 ; x 1 , x 2 ,..., x n ∈ R }, 对于通常向量的加法和数乘运算,集合 V 构成线性空间,则其维数是( )
【单选题】[3-80]Storm track is anything EXCEPT ___ .风暴路径不是指风暴移动的速度。
A.
the direction where the storm comes from风暴来得方向
B.
the direction the storm is moving towards风暴去的方向
C.
the speed at which the storm moves风暴移动的速度
D.
the path taken by the storm风暴的路径
【单选题】If a diesel engine operates at about 700 r/min, then what is it known as? 如果柴油机在大约700 r/min的速度下运行,那么它可以被称作什么?
A.
A slow speed diesel engine. 低速柴油机
B.
A high speed diesel engine. 高速柴油机
C.
A medium speed diesel engine. .中速柴油机
D.
None of the above is true. 以上都不是