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				| 1. | A jet fighter is operating at Mach number of 1.4. Wing chord is 1m then, find the location of aerodynamic centre. | 
| A. | 0.4m | 
| B. | 0.4 | 
| C. | 0.8m | 
| D. | 0.8 | 
| Answer» B. 0.4 | |