 
			 
			MCQOPTIONS
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				| 1. | In the acoustical design of a hall or an auditorium, the angle between the side walls and the curtain line should not be more than _________ degrees. | 
| A. | 20 | 
| B. | 150 | 
| C. | 100 | 
| D. | 180 | 
| Answer» D. 180 | |