司炉工对任何有害锅炉安全运行的违章指挥，有权（），并（）。
What is required for the minimum configuration of the TS7650 ProtecTIER Appliance console? （） 50 MB of available disk space and 128 MB of RAM。 100 MB of available disk space and 256 MB of RAM。 200 MB of available disk space and 512 MB of RAM。 300 MB of available disk space and 512 MB of RAM。
同一带铁芯的线圈分别接到电压相同的直流电路和交流电路中，这时会（）。 接入直流电路的电流强。 接入交流电路的电流强。 两种情况相同。
差压阀装用在CW-200K型转向架上时，两空气弹簧的允许压差为（）。 （110±10）kPa。 （120±10）kPa。 （20±10）kPa。 （150±20）kPa。
You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005.You work as a database administrator for your company. A SQL Server 2005 database is utilized in your company. And a table named Inventory is contained by the database. A column named Price is included by the table. According to the company policy， you cannot reduce more than 10 percent the value in the Price column in any single database operation. Through many kinds of method， the company makes updates to the Price column. For instance， the utilization of ad hoc queries is one of the methods. Since you are the database administrator， you should confirm that this company policy takes its effect. Which action should be performed？（） A stored procedure should be created， and changes are disallowed by the procedure to the Price column that violates company policy.。 On the Price column， a check constraint should be created， and a specified minimum value is required by the check constraint.。 A trigger should be created， and changes are rolled back by the trigger to the Price column that violates company policy.。 On the Price column， a foreign key constraint is created to a table that valid prices are included.。
比较几种疗效相同的干预方案所需成本应用药物经济学研究方法是（）
