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JBoss jBPM is a flexible, extensible framework for process languages. jPDL is one process language that is build on top of that common framework. Overview of the jPDL components The jPDL graphic... 阅读全文
posted @ 2009-01-01 17:04
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1.have表示有这个概念的时候,可以在have/has后直接加not 2.当have表示行为动作的时候,不可以在have/has后直接加not,而要借助一般现在时助动词do/does来表 示否定和疑问。 3.have可以作为助动词,其一,用于现在完成时。其二,没有实际意义。 Do you have any butter? I don't have any butter,but I have so... 阅读全文
posted @ 2008-05-03 21:05
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