Engineering Apprenticeship Help

[megahard]

I have yet another apprenticeship interview, and I was wondering if anybody could aid me in knowing what these engineers do:


Electrical (http://www.tteltd.co.uk/subjects/electrical.htm)


Instrumentation (http://www.tteltd.co.uk/subjects/instrumentation.htm)


Mechanical (http://www.tteltd.co.uk/subjects/mechanical.htm)


Welding and Fabrication (http://www.tteltd.co.uk/subjects/welding.htm)


Lifting and Access (http://www.tteltd.co.uk/subjects/lifting.htm)


Process Operations (http://www.tteltd.co.uk/subjects/process.htm)


I know what the welding one involves, but the others I'm not too sure

As an apprentice, what do you think each would involve?