For retrieving the files in each activity, use another method in the TreeParent object to get the URL of the activity (first-level node) and do a get request on the activity URL as shown in listing 3.
为了获取每个活动中的文件，使用TreeParent对象中的另一个方法获取活动(第一级节点)的URL，并对活动url执行一个GET请求，见清单3。
In order to raise the level of the enterprise, and control business costs effectively, the thinking of Activity-Based cost method applied to business costs budget.
为提高企业的成本管理水平，有效的控制企业成本，将作业成本法的思想应用于企业成本预算中。
One method of evaluating service level is through mystery shopping. Identify at least three types of hospitality business to evaluate for your mystery shopping activity.
其中一个评价服务水平的方法是通过神秘顾客研究，你的神秘顾客研究至少要包括三种类型的酒店业务。
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