问题
单项选择题 B1型题
铸造表面粗糙是指（）
A.铸造金属冠边缘与可卸代型工作模型的基牙之间的边缘有间隙
B.熔模经包埋、铸造后所获得的铸件某些部位缺损
C.铸件上可看到明显的断裂纹
D.铸件上有气孔
E.熔模经包埋、铸造后的铸件表面形成原熔模没有的金属突起
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
铸造表面粗糙是指（）
A.铸造金属冠边缘与可卸代型工作模型的基牙之间的边缘有间隙
B.熔模经包埋、铸造后所获得的铸件某些部位缺损
C.铸件上可看到明显的断裂纹
D.铸件上有气孔
E.熔模经包埋、铸造后的铸件表面形成原熔模没有的金属突起
参考答案：E
On a cold November afternoon, my mother and I were walking back home from a pizza store. We had bought many things. We were dressed , and I was feeling a little as I was carrying our shopping bag, so I decided to throw something away. I was walking towards a dustbin（垃圾箱） I noticed a poor man walking out of the restaurant in front of us. He headed over to the nearby dustbin and started looking through it. I suddenly felt very because I was about to throw away a new drink just because it was too heavy. I walked up to him and handed the and some bread over to him. The man looked up and took what I gave him. A huge smile on his face. I felt I couldn’t be happier with . But then he said, “Wow, this is my son’s lucky day!” With that, he thanked me happily and started off on his bike. I heard him singing as he rode away. I got a warm inside. I now understand what it by the saying “Giving is getting”. it was only a little action, I got and learned more in those two minutes than I did in the rest of the month. Everyone in the world help. Everyone can give help and everyone can be helped. The look of that man’s happiness appears in my mind I have the chance to do something nice. This is the power（力量）of .
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