钣金工常用的焊接方法有什么？
参考答案：
有电弧焊，气焊，电阻焊，钎焊。
--______ a volunteer is great.
-- I think so. Some of us want ______ volunteers for the next Olympics.
A．Being, being
B．To be, being
C．Being, to be
D．To be, to be
《对外贸易法》适用于香港地区货物进出口。
