如果上面的陈述和科学家的声明都是正确的，下列哪一项也一定正确？
If the statements above and the claim of the scientists are true, which of the following must also be true?
RDL文件以一系列导入陈述开始，它们被用来声明转换中涉及的EMF包。
An RDL file begins with a series of import statements, used to declare the EMF packages that will be involved in the transformation.
BICS文档陈述或者声明信息的约束。
A BICS document makes a statement, or declaration, about constraints on information.
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