for
at
by
on
第1题：
18 of the EU members have replaced their national currencies by Euro notes and coins ()2002.
A. for
B. at
C. since
第2题：
A college has a small campus where 25 faculty members are located. The faculty offices and student computers are currently on the same network. The faculty are concerned about students being able to capture packets going across the network and obtain sensitive material. What could a network administrator do to protect faculty network traffic from student connections?（）
A. Install anti-virus software on the student computers.
B. Put the faculty computers in a separate VLAN.
C. Power down the switches that connect to faculty computers when they are not in use.
D. Remove the student computers from the network and put them on a peer-to-peer network.
E. Create an access list that blocks the students from the Internet where the hacking tolls are located.
第3题：
A、with
B、to
C、at
D、by
第4题：
第5题：
请将正确答案填在第34处
A．for
B．at
C．by
D．in
第6题：
()your request, we gave you an estimate of approximate requirements for next year.
A、For
B、At
C、By
D、Under
第7题：
A. the number of consecutive TCP connections to the specified remote neig hbor
B. the number of total TCP connections that the router has
C. the number of times the router has established a TCP connection
D. the number of neighbors that the router has
第8题：
A. for
B. to
C. by
D. from
第9题：
My vessel is healthy and I request free pratique．What does the sentence My vessel is healthy mean？It means： ______.
A.My ship has been maintained
B.My ship has been painted
C.All my crew members have been vaccinated
D.All my crew members have no quarantinable diseases
第10题：