MCQOPTIONS
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				| 1. | 
                                    Cut-off ratio is the ratio of | 
                            
| A. | Swept volume to the volume at cut-off | 
| B. | Volume at cut-off to the clearance volume | 
| C. | Volume at cut-off to the swept volume | 
| D. | Clearance volume to the volume at cut-off | 
| Answer» D. Clearance volume to the volume at cut-off | |