在中国气象事业发展战略思想的指导下,确立了“按照()的要求,建设具有世界先进水平的气象事业现代化体系,率先基本实现现代化,实现从气象大国向气象强国的跨越,为全面建设小康社会提供一流的气象服务”的战略目标。
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You work as an application developer at Contoso.com. You use Microsoft .NET Framework 3.5 and Microsoft ADO.NET to develop an application. The database on the Microsoft SQL Server 2005 database has two tables that are displayed by using two SqlConnection objects in two different GridView controls. You want the tables to be displayed at the same time with the use a single SqlConnection object. What should you do?()
A. Create a bound connection by using the sp_getbindtoken and the sp_bindsession stored procedures.
B. Create an exception handler for the connection-busy exception that is thrown on using a single SqlConnection object.
C. Run the two SqlDataReader objects by using a single SqlCommand object.
D. Enable Multiple Active Result Sets (MARS) in the connection string of the application.
诱变处理后植株成活率约40%的剂量为()。
A. 半致死剂量
B. 半致矮剂量
C. 临界剂量
D. 极限剂量
测试系统的重复性误差是由系统误差引起的。
A. 正确
B. 错误