Welding process A. Thermit welding B. Seam welding C. MIG welding D. Friction welding Heat source 1. Chemical reaction 2. Exothermic Chemical reaction 3. Electric spark 4. Ohmic resistance 5. Mechanical work 6. Electric arc

Welding process A. Thermit welding B. Seam welding C. MIG welding D. F

1.	Welding process A. Thermit welding B. Seam welding C. MIG welding D. Friction welding Heat source 1. Chemical reaction 2. Exothermic Chemical reaction 3. Electric spark 4. Ohmic resistance 5. Mechanical work 6. Electric arc
A.	A-2, B-4, C-6, D-5
B.	A-2, B-4, C-1, D-5
C.	A-2, B-4, C-6, D-3
D.	A-2, B-4, C-6, D-1
Answer» B. A-2, B-4, C-1, D-5

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