The request queue is the output queue for the requesting application (application A); at the same time it serves as the input queue for the receiving application (application B).
请求队列是请求应用程序（应用程序 A）的输出队列；同时它又充当接收应用程序（应用程序 B）的输入队列。
Similarly, the response queue is used as an output queue for application B and as an input queue for the return value for application a.
类似地，响应队列用作应用程序b的输出队列和应用程序a的返回值的输入队列。
Task 4 has an input criterion requiring only business items A and B for the upper branch, while for the lower branch it has a separate criterion that includes business items A, B, and D.
Task 4 有一个输入条件，只需将业务项 A 和 B 提供给上面的分支，而它针对下面分支的则是一个单独的条件，其中包含业务项 A、B 和 D。
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