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				| 1. | Find the value of the surface temperature, if the velocity of the sound in sea water can be given as 2000 m/s and the salinity as 5.32. | 
| A. | 57 C | 
| B. | 75 C | 
| C. | 52 C | 
| D. | 72 C | 
| Answer» B. 75 C | |