某工程有七个作业A~G，按计划，完成各作业所需的时间以及作业之间的衔接关系见下表：
按照上述计划，该工程的总工期预计为（ ）周。
在工程实施了10周后，经理对进度进行了检查，结果是：作业A和B已经完成，作业D完成了30%，作业E完成了25%，其他作业都还没有开始。
如果随后完全按原计划实施，则总工期将（ ）完成。
问题1选项
A.20
B.25
C.33
D.41
问题2选项
A.提前1周
B.推迟1周
C.推迟2周
D.推迟3周
正确答案及解析
正确答案
解析
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