强迫症
热液成矿鉴别标志有哪些？
投资就是企业为获取收益而向一定对象投放资金的经济行为，各种投资方式各有各的风险，各有各的收益。
You design a Business Intelligence （BI） solution by using SQL Server 2008. The solution contains a SQL Server 2008 Analysis Services （SSAS） database. A measure group in the database contains log entries of manufacturing events. These events include accidents， machine failures， production capacity metrics， and other activities. You need to implement a data mining model that meets the following requirements： Predict the frequency of different event types. Identify short-term and long-term patterns. Which algorithm should the data mining model use？（） [" the Microsoft Time Series algorithm"," the Microsoft Decision Trees algorithm"," the Microsoft Linear Regression algorithm"," the Microsoft Logistic Regression algorithm"]
如果权益乘数为1．6，则资产负债率为（）。 ["50％","30％","62.5％","37.5％"]
简述数据通信的特点
