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You work as the application developer at Cert-Tech.com. Cert-Tech.com uses Visual Studio.Net 2005 as its application development platform. You use a Windows XP Professional client computer named Client01 as your development computer. You are developing a .Net Framework 2.0 application on Client01. You write the code shown below：Public Class Shape Private shapeName as String Public Sub Shape（ByVal shapeName as String） Me.shapename=shapeName End Sub Public Overridable Fuction GetName（） As String Return shapeName End Function Private Sub DrawShape（） ’Additional code goes here End Sub End Class You later decide to have the application compiled and registered for COM interoperability. The other developers on your team complaing that they are unable to create an instance of the Shape class in their COM applications. You are required to ensure that COM applications are able to create an instance of the Shape class. What should you do？（）
生态预测的方法是列表清单法、图形叠置法、生态机理分析法、景观生态学法、指数法和综合指数法、类比分析法、系统分析法、生物多样性评价方法、海洋及水生生物资源评价方法、土壤侵蚀预测方法
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以下属于旅游的是：（）。
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