问题
单项选择题
高频铸造机的工作原理是
A．熔焊
B．电阻焊
C．电流感应加热
D．离心
E．涡流
答案
参考答案：C
解析：风冷式高频离心铸造机的基本工作原理是高频电流感应加热原理。
搜题请搜索小程序“爱下问搜题”
高频铸造机的工作原理是
A．熔焊
B．电阻焊
C．电流感应加热
D．离心
E．涡流
参考答案：C
解析：风冷式高频离心铸造机的基本工作原理是高频电流感应加热原理。
| 完形填空。 | ||||
| An old man lived in a nice house with a large garden. He took care of his 1 all the time, watering and fertilizing them. One day a young man went by the 2 . He looked at the beautiful flowers, imagining how happy he could be 3 he lived in such a beautiful place. Then, suddenly he found the old gardener was 4 . He was very surprised about this and asked, "You can't see these flowers. 5 are you busy taking care of them every day?" The old man smiled and said, "I can tell you four 6 . First, I was a gardener when I was young, and I really like this job. Second, 7 I can't see these flowers, I can touch them. 8 , I can smell the sweetness of them. As to the last one, that's 9 ." "Me? But you don't know me," said the young man. "Yeah, it's 10 that I don't know you. But I know that flowers are angels that everybody likes. We enjoy the happiness these flowers have brought us." The blind man's work opened our eyes and pleased our hearts, which also made his life happier. | ||||
|