Hi guys! My name is cristobal, Im from Chile Im studying civil Industrial Engineering and I need ur.

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Hi guys!
My name is cristobal, Im from Chile
Im studying civil Industrial Engineering
and I need ur help!!…
next week I have a big test! and I need to confirm
my exercises! I found some files with the answers
of the book.. but I need the answers of the laboratory
for example, exercise 91 chapter 1!!!
please i need your help!!
bye

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