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Q. |
The diameter of a cylindrical shell of a Scotch marine boiler varies from ___________ |
A. | 3.5 to 4.5m |
B. | 1.5 to 2m |
C. | 2.5 to 3.5m |
D. | none of the mentioned |
Answer» C. 2.5 to 3.5m |
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