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8. Green mold in ceramic mold casting characterised by A) High strength B) Low moisture contents C) High hardness D) Can be used to produce parts with no defects E) None 9. flatness tolerances in the flat rolling process can be reduced by A) perform roller levelling B) increase friction C) increase strip speed D) increase roller diameter E) All 10. In casting process, sand wash occurs as a results of..... A) Low die strength B) Low pouring speed C) low amount of material D) low fluidity of molten metal E) high cooling rate F) all 11. in.......... process, a hole is performed in a disk and increased in their diamet and the thickness of the resulted ring is reduced A) swagging B) linear swagging C) pack rolling D) ring rolling E) All 12. In die casting process, combination die can be used to ...... A) Produce multi same parts B) Produce different parts for several products C) Produce different parts for one final product D) Produce just one unit E) None order to reduce the rolling force, a bac In the reels the