Unless the surfaces are cleaned first
Athe metal will not take white heat
Bthe resulting weld will be weak
Cthe joint will be rough
Dthe metal will be less plastic
Athe metal will not take white heat
Bthe resulting weld will be weak
Cthe joint will be rough
Dthe metal will be less plastic
Related Questions:
Pick out the word that is most nearly the SAME in meaning as the words given in capitals as used in the passage.
TREMENDOUS