问题
问答题 简答题
什么是冲压加工工艺？
答案
参考答案：
冲压加工是在常温下，利用冲压设备（压力机）和冲模，使各种不同规格的板料或坯料在压力作用下发生永久变形或分离，制成所需各种形状零件的过程。
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什么是冲压加工工艺？
参考答案：
冲压加工是在常温下，利用冲压设备（压力机）和冲模，使各种不同规格的板料或坯料在压力作用下发生永久变形或分离，制成所需各种形状零件的过程。
One day something went wrong with a man’s bicycle chain(链条). The man could not repair it, so he looked 1 for help. The only house nearby belonged to a woman who had 2 there a few months earlier. The man knocked at the door, but the woman did not answer. The door had clear glass in it, and the man 3 see that the woman was home. He decided to knock again. Finally the woman came to the door. The man immediately explained his 4 . “I can fix the chain,” the woman said. Later when the bike was 5 to go, the man said, ‘Thanks. I hope I can help you some day.” “I never need help,” the woman said. The following week the man was riding his bike 6 he noticed the woman walking down the street. A strong wind suddenly lifted(拾起) her hat and sent it into the branches(枝) of an old tree. The woman tried to get her hat with a stick, but she failed. She seemed 7 because she clearly was not dressed for tree-climbing. The man hurried over, quickly climbed up to the hat and 8 it into the woman’s waiting hands. When she put on her hat, she 9 the man as he climbed back on his bike. ‘I think I told you I never need help,” the woman said, “I’m glad you didn’t 10 me. Thanks.” Then they both smiled.
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