WHICH_OF_THE_FOLLOWING_PROCESSES_CAN_BE_USED_AS_ALTERNATIVE_TECHNIQUE_FOR_JOINING_ALUMINIUM_AND_ITS_ALLOYS??$

WHICH_OF_THE_FOLLOWING_PROCESSES_CAN_BE_USED_AS_ALTERNATIVE_TECHNIQUE_

1.	WHICH_OF_THE_FOLLOWING_PROCESSES_CAN_BE_USED_AS_ALTERNATIVE_TECHNIQUE_FOR_JOINING_ALUMINIUM_AND_ITS_ALLOYS??$
A.	Tungsten inert-gas welding
B.	Metal inert-gas welding
C.	Friction stir welding
D.	Oxy-Acetylene flame technique
Answer» D. Oxy-Acetylene flame technique