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问题 单项选择题

在Oracle中，当FETCH语句从游标获得数据时，下面叙述正确的是（）。

A.游标打开

B.游标关闭

C.当前记录的数据加载到变量中

D.创建变量保存当前记录的数据

答案

参考答案：C

单项选择题

患者，女，26岁，已婚。突发尿痛、尿频、尿急，腹痛半天。检查：肾区无叩击痛，尿中白细胞（++），中段尿细菌培养为大肠杆菌。其诊断是（）.

A.急性肾盂肾炎

B.肾结核

C.急性膀胱炎

D.肾结石

E.慢性肾炎
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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（1） of passing through each network is the same; it is one（2）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 （3） through a network can have different costs (metrics). For example, if maximum（4） is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum（5）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.

（4）是（）

A.packet

B.throughput

C.error

D.number
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