Здравствуйте.Не могли бы помочь с определением видов конструкций
1. Having tested the new type of hoisting crane, the engineer offered some recommendations as to its use- having tested конструкция «Объектный падеж с причастием I»
2. With a minimum of changes having taken place in the post-tensioning system, one can be sure of obtaining a post-tensioned crack-free panel- having taken конструкция «Объектный падеж с причастием I»
3. The experiment having been finished the students left the laboratory- having been finished-затрудняюсь