要焊好焊点如何上锡？
参考答案：上锡要适当：铬铁头"吃"锡应根据焊点大小来决定，以能包焊住形成光滑的焊点为准。
—I'm sorry to have shouted at you. I didn't mean to be so rude.
—You were very angry. Anyhow, __________. [ ]
A. you are welcome
B. I'm sorry about that
C. it doesn't matter
D. that's right
农村信用社可以向客户提供哪些服务？
