计算机病毒有哪些特点？
简述共同海损（请解释的同时举例说明）。
Refer to the output shown on switch SW1 below： Warning： Spantree port fast start should only be enabled on ports connected to a single host.Connecting hubs， concentrators， switches， bridges， etc. to a fast start port can cause temporaryspanning tree loops. Use with caution. Spantree ports 4/1-24 fast start enabled. What command could you enter to reproduce this output？
焚风
简述文学批评写作程序。
评汉谟拉比法典。
