 
			 
			MCQOPTIONS
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				| 1. | If the extrusion ratio of the material used is increased by two times, the required extrusion pressure _____________ | 
| A. | increases by four times | 
| B. | reduces by half | 
| C. | increases by two times | 
| D. | decreases by four times | 
| Answer» D. decreases by four times | |