Re sitting acs

[DaveTidy]

I've got a system.

Hmm. Is that the old 2 of the answers are way off the plot usually so forget them. Pick the most obvious answer so if you get it wrong it must have been the other one when you have to choose again?

 

[paddy]

I agree with c.gas the nice book is the best. If you live down south Southern Energy Training Academy in Havant is doing good offers on reassessment at the moment