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				| 1. | What is change in length of member if temperature increases by ΔT and expansion coefficient is ά?$ | 
| A. | <sup>1</sup>⁄<sub>4</sub> ά ΔTL | 
| B. | <sup>1</sup>⁄<sub>3</sub> ά ΔTL | 
| C. | <sup>1</sup>⁄<sub>2</sub> ά ΔTL | 
| D. | ά ΔTL | 
| Answer» E. | |