Engine_2014 : Steam Plants - 1207/1951
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| Which of the following statements represents the major difference between a boiler drum and a header? |
| A) The temperatures at which they are operated. |
| B) The number of tubes permitted to enter a drum or header. |
| C) The size of each is significantly different. |
| D) The size of the tubes permitted to penetrate the drum or header. |
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