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1. |
Normally what is the pressure under which centrifugal blowers operate? |
A. | 0.35-0.7 kg/cm<sup>2</sup> |
B. | 0.5 -0.7 kg/cm<sup>2</sup> |
C. | 0.35 kg/cm<sup>2</sup> |
D. | 0.35-0.5kg/cm<sup>2</sup> |
Answer» B. 0.5 -0.7 kg/cm<sup>2</sup> | |