1. Who can be a welder-diver? 2. What sorts of basic and supplementary skills must a welder-diver possess? 3. How can certified surface welders become welder-divers? 4.

sasasa в категроии Английский язык, вопрос открыт 10.11.2017 в 09:38

What is more important: receiving the welder-diver qualifications or maintaining them? 5. Why do commercial divers pass an annual dive physical? 6. Do welder-divers have any future career opportunities? 7. Do you think surface welding equipment can be used underwater?