在TCP/IP参考模型中,( )协议是一种可靠的、面向连接的协议。
A. IP
B. TCP
C. UDP
D. X.25
查看答案
在目前使用的100Mbps宽带的局域网中,双绞线的8条芯线并没有全部用上,只有1,2,3,6线有效。
A. 对
B. 错
Due to global warming, thefor polar bears is shrinking, causing the number of polar bears to keep decreasing.
A. habit
B. habitat
C. apparatus
D. habitant
Even a 70% discount of the fares offered by the airlines failed topeople’s demand for domestic travels, let alone overseas trips.
A. spur
B. stir
C. stour
D. scour