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【Daily Question】Utilities - Mechanical & Electrical - 20191125

2019-11-25View Original

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Boiler drums are commonly made of ( ) material. A. Ordinary carbon steel B. High-quality carbon steel C. Low-alloy high-strength steel D. Special steel 【Answer】C 【Explanation】The boiler drum is a pressure vessel; therefore, low-alloy high-strength steel with higher pressure resistance should be chosen. Carbon steel has lower pressure resistance compared to low-alloy high-strength steel, so it is not an appropriate choice. Special steel possesses certain special properties, but it is also not a suitable option

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