问题
问答题 简答题
铸造支架完成后，在模型试戴中出现就位困难的原因有哪些?
答案
参考答案：
铸造支架完成后，在模型试戴中出现就位困难的原因有：
(1)支架无共同就位道，模型的导线不正确，倒凹未填准确。
(2)固位臂设置不当。
(3)支架变形。
(4)模型损坏。
(5)金属耐火材料、蜡型材料的选择有误，致使铸件收缩量大。
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铸造支架完成后，在模型试戴中出现就位困难的原因有哪些?
参考答案：
铸造支架完成后，在模型试戴中出现就位困难的原因有：
(1)支架无共同就位道，模型的导线不正确，倒凹未填准确。
(2)固位臂设置不当。
(3)支架变形。
(4)模型损坏。
(5)金属耐火材料、蜡型材料的选择有误，致使铸件收缩量大。
阅读下列短文，根据短文中的信息完成文后表格。（每空一词) A 10-year-old boy decided to learn judo though he had lost his left arm in a car accident. The boy was doing well, so he couldn’t understand why, after three months of training, the master had taught him only one move. “ Master,” the boy finally asked, “shouldn’t I be learning more moves?”“ This is the only move you know, but this is the only move you’ll ever need to know,” the teacher answered. Several months later, the teacher took the boy to his first competition. Surprising himself, the boy easily won his first two matches. The third match proved to be more difficult, but after some time, his opponent (对手) became impatient and charged; the boy skillfully used his one move to win the match. Still amazed by his success, the boy was now in the final. This time, his opponent was bigger, stronger, and more experienced. Soon after the match started, the boy seemed to lose. Thinking that the boy might get hurt, the judge called a time-out. He was going to stop the match when the teacher appeared. “ No,” the teacher said, “Let him continue.” A short time after the match carried on, his opponent made a careless mistake. At once, the boy used his move to pin (压住) him. The boy won the match and the competition. On the way home, the boy asked the teacher what was really in his mind. “ Why could I win the competition with only one move?” The teacher answered. “ First, you’ve mastered one of the most difficult throws in judo. Second, your opponent can only attack your left arm to win you.” 根据短文内容完成下面的表格，每空一词。
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