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简述设置教学目标的意义。

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西餐使用大量的金属餐具，其中尤以（）品种最多。

A. 酒杯
B. 刀、叉、匙
C. 面包盘
D. 调味用具

You are the network administrator for your company. The network consists of a single Active Directory domain. All network servers run Windows Server 2003. You are directed to back up all files in a folder named C:\Data on one of the servers. You use the Backup utility to perform a normal backup of C:\Data. When the backup is complete, you review the backup log file and discover the following message: "WARNING: Portions of '\Data\Letter.doc' cannot be read. The backed up data is corrupt or incomplete. This file will not restore correctly." You need to ensure that all documents in C:\Data can be restored successfully. What should you do? （）

A. In the Backup utility, specify an incremental backup. Run the backup again.
B. In the Backup utility, clear the Disable volume shadow copy option. Run the backup again.
C. In the attribute properties of C:\Data\Letter.doc, select the File is ready for archiving option. Run the backup again.
D. In the Offline Settings dialog box of C:\Data, select the All files and programs that users open from the share will be automatically available offline option. Run the backup again.

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潘某与张某签订了一份电冰箱的买卖合同，由潘某向张某提供200台冰箱，在潘某准备向张某发货时，事先通过电话与张某联系，却被电信局告知张某已变更住所，致使潘某不知向何处发货。此时潘某应如何处理（）

A. 因履行不能而合同无效
B. 可解除合同
C. 可终止履行
D. 可中止履行或将标的物提存

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登记会计账簿时发现数字错误，划去整个数字中的错误数字，并由会计人员和会计机构负责人在更正处盖章，以明确责任。()

A. 正确
B. 错误

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