QUESTION: Fix punctuation: The Fluke Automotive Solution Center can help take some of the mystery and the headache out of automotive electrical troubleshooting
ANS: The Fluke Automotive Solution Center can help take some of the mystery- and the headache - out of automotive electrical troubleshooting.
QUES: The questionnaire is thus an active tool in APC Denmarks work to fulfil its own objectives

correct the punctuation.

CORRECTED: The questionnaire is thus an active tool in APC Denmark's work to fulfil its own objectives.
Question: As guardian of the Treaties it also ensures that European is applied
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Answer: As "guardian of the Treaties", it also ensures that European [?] is applied.
And in order to thank all the uses support and also as a return DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like ehSSOdll

Can you repeat this sentence, but add in punctuation?
And in order to thank all the uses' support and also as a return, DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like ehSSO.dll.
input: The new transparent clearomizer graduated scale CE5 v2 is the upgraded version of clearomizorului ce4
fixed: The new transparent clearomizer graduated scale CE5 + v2 (is the upgraded version of clearomizorului ce4 +)
A very popular place to enjoy the summer break is the 130meter pier located in the GdanskBrzezno district the longest wooden pier in Europe For some photos of the city click here

Can you repeat this sentence, but add in punctuation?
A very popular place to enjoy the summer break is the 130-meter pier located in the Gdansk-Brzezno district, the longest wooden pier in Europe. For some photos of the city click here