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1. |
Two identical ball bearings Pand Q are operating at loads 30 kN and 45 kN respectively. The ratio of the life of bearing P to the life of bearing Q is |
A. | 81/16 |
B. | 27/8 |
C. | 9/4 |
D. | 3/2 |
Answer» C. 9/4 | |