问题
单项选择题
等离子弧切割不锈钢、铝等时，厚度可达______mm以上。
A．50
B．100
C．200
D．300
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
等离子弧切割不锈钢、铝等时，厚度可达______mm以上。
A．50
B．100
C．200
D．300
参考答案：C
| 完形填空。 | |||
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