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问题 单项选择题

信用社收回的开户单位“余额对账单”回执联和“未达账项调节表”，应在( )日内整理完毕，按科目、账号由小到大装订。

A．5
B．15
C．10
D．3

答案

参考答案：C

解析： 信用社收回的开户单位“余额对账单”回执联和“未达账项调节表”，应在10日内整理完毕，按科目、账号由小到大装订。

单项选择题

下列关于别名和自联接的说法中，正确的是

A．SQL语句中允许在WHERE短语中为关系定义别名

B．为关系定义别名的格式为：<别名><关系名>

C．在关系的自联接操作中，别名是必不可少的

D．以上说法均正确
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单项选择题

While the Internet is inherently insecure, businesses still need to preserve the privacy of data as it travels over the network. To help do that, the Internet Engineering Task Force an international group of network designers, operators, vendors, and researchers concerned with the evolution of (71) has developed a suite of (72) called Internet Protocol Security (IPSec).
IPSec creates a standard platform to develop secure networks and electronic (73) between two machines. Secure tunneling via IPSec creates (74) connections in a network through which data packets can move. It creates these tunnels between remote users and within a local network. It also (75) each data packet in a new packet that contains the information neccessary to set up, maintain and tear down the tunnel when it’s no longer needed.

A．supports

B．drives

C．encapsulates

D．transmits
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