7. Which appliance below is not a sample of developed products?
A washing machine B. stoves
C refrigerators D flat iron
8. The following are the examples of Seam except:
A. Grooved seam
B. Countersunk Seam
C. Lap Seam D. Pyramid
9. It plays an important part in the fabrication of sheet metal ducts and pipes
A Pattern development B. Lap seam C. Miter line D. Project
10. The following are example of Hem except:
A. Project B. First Hem
C. Second Hem​