常用手工电弧焊收尾方法有()收弧,()收弧,()收弧。
参考答案:划圈法;反复断弧法;回焊法
---I’m thinking of losing weight these days.
----Oh, you ______ be out of mind. You’re 50 kilograms at the most!
A.must
B.will
C.will
D.may
棘层松解最常见于()
A.天疱疮
B.类天疱疮
C.单纯疱疹
D.毛囊角化病
E.神经性皮炎