问题
单项选择题
铸道设置原则中错误的是
A．不能破坏咬合面的形态
B．不能破坏邻接关系
C．铸道在熔模最厚处连接
D．铸道的直径一般为1mm
E．铸道的直径、长度应满足铸件的质量要求
答案
参考答案：D
解析：铸道的直径一般为2.0mm以上。
搜题请搜索小程序“爱下问搜题”
铸道设置原则中错误的是
A．不能破坏咬合面的形态
B．不能破坏邻接关系
C．铸道在熔模最厚处连接
D．铸道的直径一般为1mm
E．铸道的直径、长度应满足铸件的质量要求
参考答案：D
解析：铸道的直径一般为2.0mm以上。
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| Everyone in our school loves sports. Every morning 1 we get up, we do morning exercises. After the second class we do exercises again. We only have 2 classes twice a week, but we do physical training at five every afternoon. The most popular sport is basketball. The 3 enjoy playing it andmany of the girls like it, too. 4 popular sport is football and in every class there 5 lots of football fans. Volleyball is often played when the weather is 6 . We have school teams in basketball, football and volleyball. Our teams often 7 friendly matches with teams from other schools. When there is a match, 8 of us go to watch it and cheer our side on. Besides ball games, some of us like track-and-field events, 9 we often practice running, jumping and throwing. Every term we have tests in these events and once a year,we hold a sports meeting. Sports help us to keep 10 . | ||||
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