瘀血致痛的特征之一是()
A.胀痛
B.固定痛
C.刺痛
D.绞痛
E.冷痛
参考答案:C
--- I can’t repair these until tomorrow, I’m afraid.
--- That’s OK, there’s ____________.
A.no problem
B.no wonder
C.no doubt
D.no worry
合金钢管焊口焊接后,热处理的目的是什么?