Q10

A burst disc is designed to_____ and can be found on

c)    Reduce the possibility that an over-pressurised tank will explode / Tank

Q11

Most modern regulators have a / an ____________ design, which means that the valve opens ____________ the flow of air

a)    Upstream / against

b)   Downstream / against

c)    Downstream / with

d)   Upstream / with

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