In the event of a major tube failure of fire tube boiler, high-pressure water can be forced directly into the furnace area, rapidly creating large quantities of steam, which have the potential for major boiler explosion.
【简答题】阅读理解。 There are many people in the bus and there are no empty (空的) seats. When a young man gets on, an old man near him wants to stand up, but the young man push(推) him back to his seat. 'Thank you,' ...
【简答题】Jean-Michael Lourdis was a promising young pianist. But when the young man played, it seemed to him, as if his hands were iron. He worried so much about his playing that he became oversensitive (过度敏感的...