An Enterprise Resource Planning (ERP) is built upon a commercial（）that promises the seamless （）of all the information flowing through the company ─financial, accounting, human resources, supply chain and customer information. In implementation, all ERP systems include several features. The system is installed on a typical database management system. It requires initial setup according to the organization’s process, but it may be（）according to the organization’s unique process requirements through a tool set contained within the ERP applications. Using ERP,（）can be prescribed to automate approval processes through established chains of command. One of the methods used to effect rapid implementation of the ERP system is to conduct concurrent（）sessions during the early stages of ERP implementation.

An Enterprise Resource Planning (ERP) is built upon a commercial（）

A．operating system

B．middleware

C．software package

D．management system

家用电炉有三个部件：加热器、恒温器和安全器。加热器只有两个设置：开和关。在正常工作的情况下，如果将加热器设置为开，则电炉运作加热功能；设置为关，则停止这一功能。当温度达到恒温器的温度旋钮所设定的读数时，加热器自动关闭。电炉中只有恒温器具有这一功能。只要温度一超出温度旋钮的最高读数，安全器自动关闭加热器。同样，电炉中只有安全器具有这一功能。当电炉启动时，三个部件同时工作，除非发生故障。
以上判定最能支持以下哪项结论

A．一个电炉，如果它的恒温器和安全器都出现了故障，则它的温度一定会超出温度旋钮的最高读数。

B．一个电炉，如果其加热的温度超出了温度旋钮的设定读数但加热器并没有关闭，则安全器出现了故障。

C．一个电炉，如果加热器自动关闭，则恒温器一定工作正常。

D．一个电炉，如果其加热温度超出了温度旋钮的最高读数，则它的恒温器和安全器一定都出现了故障。