Which elements are added to molten steel specifically for deoxidation purposes? O a) manganese oxygen. Ob) silicon + oxygen. Oc) manganese + aluminum. Od) carbon + manganese. The liquid penetrant inspection method is an effective NDT method for detecting: O a) Very fine surface cracks in the weld cap even if it is not clean and the surface is rough. Ob) very fine internal undercutting in groove and fillet welds. Oc) Very fine surface cracks in the weld cap providing it is clean and the surface is not too rough. Od) Very fine indications of porosity beneath the weld surface.

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