问题
问答题 简答题
已知45#钢是含碳量为0.45%的铁碳合金,计算其平衡态室温组织中珠光体组织含量是多少?
答案
参考答案:
珠光体合量为(0.45-0.0218)/(0.77-0.0218)×100%=57.23%
答:珠光体组织含量为57.23%。
已知45#钢是含碳量为0.45%的铁碳合金,计算其平衡态室温组织中珠光体组织含量是多少?
参考答案:
珠光体合量为(0.45-0.0218)/(0.77-0.0218)×100%=57.23%
答:珠光体组织含量为57.23%。
完形填空 | ||||
David was a doctor. He spent 1 time in playing when he was in the medical college. Of course, he learned nothing. Later on he tried to find a 2 in the cities, but he failed. He 3 return to his hometown. It was 4 and there was only one hospital in it. He thought he knew much and looked down upon (瞧不 起) his 5 . But soon the patients found he was not a good doctor 6 few asked him to look them over. He knew but he didn't 7 . One day a traveler came into his office. The man caught a cold and wanted some 8 . David hoped to be paid more and looked over one of the traveler's eyes 9 . "Oh dear!" called out David, "You have a bad heart disease. You should be in hospital and only I can help you!" "Please 10 my right eye, sir," said the traveler, "the left one is false (假的)." | ||||
|