The secret to all ppl exams Gem is RTFQ youve heard it before you know it but its there again for you. There will be at least two that are complete bollocks just take your time it will be no probs for you im sure . The only ones I struggled on were bloody flashing lights from towers alwasy confuse me those , I now have them on my kneeboard , never had to use them but there ya go
Good Luck