1) Mandatory  a) b) c) 2) What is the three parts of the fire triangle? heat, oxygen and ... a) fuel b) oxygen c) heat 3) Warning a) b) c) 4) How many points of contact on a ladder? a) 1 b) 2 c) 3 d) 4 5) Who is the boss? a) employer b) employee 6) Who is the worker? a) employer b) employee 7) What voltage is a yellow plug? a) 110 b) 240 c) 415

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