焊接热影响区大小与焊接（）、焊接（）等因素有关。
参考答案：方法、规范
–As you may have found, the Chinese language is ______ in idioms and proverbs.
--Yes, I often get ______.
A．full; confusing
B．abundant; confused
C．different; to be confused
D．varied; confuse
用于测量肾血浆流量的物质是
A．尿素 B．肌酐 C．葡萄糖 D．碘锐特 E．菊酚
