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You plan to create a unique nonclustered index on the CustomerID， LastName， and FirstName columns of the CustomerData.Customers table in the CRM database. To aid in estimating the space requirements for the index， you identify the following variables：

You need to identify the most significant additional variable that will increase the estimated index size. Which additional variable should you identify？（）

有核心主导的创业团队与群体性的创业团队相比较（）。 先有创业点子再有创业团队。 先有创业团队的结识才有创业点子的提出。 更强调人际关系在创业团队构成中所扮演的角色。 团队的稳定性较强。 团队的稳定性更弱。 细胞内的钙有结合钙和离子钙两种形式，二者都具有生理活性。 《中小学教师职业道德规范》中将“对学生严格要求”，修订为“对学生（）”。 以下对挫折的理解不正确的是（） 挫折对人利大于弊。 挫折对人弊大于利。 挫折对人百害无一益。 挫折具有两重性，对人有利有弊。 All client computers on your company network were recently upgraded from Windows Vista to Windows7. Several employees use a scanner to import document images into a database. They install a new scanning application on their computers. The application updates the device driver for the scanners as part of the installation process. Employees report that the application can no longer connect to the scanner. You need to ensure that the employees can use the scanner. What should you do?（） Roll back the device driver to the previous version.。 Reinstall the application in Windows Vista compatibility mode.。 Set the application compatibility properties to run the application as an administrator.。 Restart the computer by using the System Configuration tool to load only basic devices and services.。

You plan to create a unique nonclustered index on the CustomerID， LastName， and FirstName columns of the CustomerData.Customers table in the CRM database. To aid in estimating the space requirements for the index， you identify the following variables：

You need to identify the most significant additional variable that will increase the estimated index size. Which additional variable should you identify？（）