the problem (decision □ measures, namely, ■)the SHOP spark prevention equipment, welding defectthe welding quality CABLE, discountthe standard welding workshop floor and surrounded by the:processing: welding market CABLE to connect with the /in the history of SOP and warning: □, SOP error □...work on the ■, out of work, □, a ■ □, warningthe unreasonable level (□ laws, regulations ■, general □)
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