题目内容
听力原文：W: Hello! Can I help you？
M: Yes, we had a reservation for this weekend.
W: All right, what was the name, sir？
M: Bill Martin.
W: Oh, yes, here it is. A double for two nights？
M: Yes, that's right. But we were wondering...would you happen to have a suite available this weekend, something with a living room and a kitchenette？
W: Well, the only one that's available this weekend is the executive suite, and that'll run you $140 a night.
M: I see. That's pretty high...
W: You know, sir, this room is more than twenty-four square feet, and it has a refrigerator.
M: Really？ That sounds fine, then. What do you say, Sally？
Sally: Sounds good to me, too.
M: Good, the double then.
(17)
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A．CA的签名B．证书中的公钥C．网站的私钥D．用户的公钥
听力原文：W: Could you tell me the best way to send these books to Beijing？
M: You should send them by express mail.
Q: Where is this conversation probably taking place？
(3)
A．不完全存根区域B．标准区域C．主干区域D．存根区域
Routing．protocols use different techniques for assigning【S1】to individual networks．Further，each routing protocol forms a metric aggregation in a different．way．Most routing protocolscan use muh．iple paths if the paths have an equal【S2】．Some routing protocols can evenuse multiple paths when paths have an unequal cost．In either ease，load【S3】can improveoverall allocation of network bandwidth．When mulliple paths are used.there are several ways to distribute the packets．The two most common mechanisms are per—packet load balancing and per—destination load balancing．Per—packet load balancing distributes the【S4】across the possi-ble routes in a manner proportional to the route metrics．Per-destination load balancing distributes packets across the possible routes based on【S5】．
【S1】
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