Question

when using the oxy-fuel system you should
select one:
a. be careful handling lighted torch
b. be careful handling of hot metal
c. have adequate ventilation of fumes
d. all of these

Explanation:

When using an oxy - fuel system, handling a lighted torch carefully (a) is necessary to prevent fires or burns. Handling hot metal carefully (b) is important as hot metal can cause severe burns. Adequate ventilation of fumes (c) is required to avoid inhaling harmful fumes. So all these precautions (a, b, c) are relevant, meaning option d is correct.

Answer:

d. All of these