What is the difference between completion acceptance, utilization acceptance, completion acceptance and single project acceptance?

It's been so long, and no one answered.

Let me say:

Completion acceptance is a general concept, and the latter items all belong to completion acceptance, but the difference is that the objects of acceptance are different.

For example, the completion acceptance is equivalent to fruit, and the use acceptance and handover acceptance are equivalent to apples and pears.

Single project acceptance = completion acceptance, overall project acceptance = utilization acceptance, and another unit project acceptance = intermediate acceptance. These are the same things with two names.