MCQOPTIONS
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				| 1. | 
                                    A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as | 
                            
| A. | Blow off cock | 
| B. | Fusible plug | 
| C. | Superheater | 
| D. | Stop valve | 
| Answer» E. | |