以下均为限制合同责任问题的可接受方式除了 （）

设计工程师通知你，找到了更便宜的零部件，但是你不能确认该零部件会否影响产品的性能，你必须先： （）

Contained within the first step of a five step process to determine the risk analysis of the project’s risk events, a process of ________ is performed to see if the risk should be included or excluded as part of the project scope

项目变更的三大起因是：（）

For which of the following can the work breakdown structure be used？