According to the Chemical Data Guide，epichlorohydrin is a(n)（）.

The principle for a stack memory to store data is

Some xSeries servers support 4-way memory interleaving and some support 2-way interleaving.  In both types of interleaving， the data is accessed 256 bits at a time.  How is this 256-bit data access achieved with 2-way interleaving？（）

已知有如下结构体： struct sk { int a； float b； }data，*p； 若有P=&data，则对data的成员a引用正确的是( )。

已知有结构体： struct sk { int a； float b； }data,*p； 若有p=&data，则对data的成员a的正确引用是( )。

设有定义：struct sk {int a；float b；} data，* p； 若有p＝& data；，则对data中的a域的正确引用是 ( )

已知有结构体：struct sk{ iht a;float b;)data,*p;若有p=&data，则对data的成员a的正确引用是( )。

已知有结构体： struct sk { int a; float b; }data,*p; 若有p=&data, 则对data的成员a的正确引用是( )。

设有如下定义： struct sk { int a；float b；}data，* p； 若有p＝& data；，则对data中的a域的正确引用是 ( )

You are developing a data contract for a Windows Communication Foundation (WCF) service. The data in the data contract must participate in round trips. Strict schema validity is not required. You need to ensure that the contract is forward-compatible and allows new data members to be added to it. Which interface should you implement in the data contract class?（）

Generally, data mining (sometimes called data or knowledge discovery) is the process of analyzing data from different perspectives and (1) it into useful information information that can be used to increase revenue, (2) costs, or both. Data mining software is one of a number of analytical tools for analyzing data. It (3) users to analyze data from many different dimensions or angles, categorize it, and summarize the relationships identified. Technically, data mining is the process of finding correlations or patterns among dozens of fields in large relational databases.Although data mining is a (4) new term, the technology is not. Companies have used powerful computers to sift through volumes of supermarket scanner data and analyze market research reports for years. However, continuous innovations in computer processing power, disk storage, and statistical software are dramatically increasing the accuracy of analysis while driving (5) the cost.

A customer has a Fibre Channel switch residing in a configuration where both production and test data coexist. Which of the following is the simplest method for ensuring that the two types of data do not flow through the same port?（）