在Windows2000中,Ping命令可以确定()
A、下一跳路由
B、网络是否正确连接
C、网络连接的状况(包丢失率)
D、路由表
参考答案:B, C
* * 之名,最早见于()
A.《内经》
B.《难经》
C.《脉经》
D.《诸病源候论》
E.《金匮要略》
Hay farmers are in a perfectly competitive market. Assume that each acre of land produces 100 bushels of hay. The marginal revenue product of an acre of land is then:()
A. (price of hay per bushel)/100.
B. price of hay per bushel.
C. 100 × (price of hay per bushel).