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问题 不定项选择题

把放入一定量的蒸馏水中，一定温度下达到平衡：当向悬浊液中加入少量生石灰后，若温度保持不变，下列判断正确的是[ ]

A．溶液中数减少　

B．［］增大　

C．溶液pH不变　　

D．溶液pH增大

答案

AC

填空题

介绍一下你自己：此题是开放性答案，只要合理都给分

我出生于______年，这一年二月有______天，我的身高约______，体重约______，我的教室的面积约______．
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单项选择题

The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The (91) of passing through each network is the same; it is one (92) count. So if a packet passes through 10 network to reach the destination, the total cost is 10 hop counts. Other protocols, such as OSPF, allow the administrator to assign a cost for passing through a network based on the type of service required. A (93) through a network can have different costs (metrics). For example, if maximum (94) is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum (95) is the desired type of service, a fiber-optic line has a lower metric than a satellite line. OSPF allow each router to have several routing table based on the required type of service.

（92）是（）

A.process

B.hop

C.route

D.flow
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