当m=______时，函数y=3x+m-2是正比例函数．
根据正比例函数的定义可得：
m-2=0，
解得：m=2．
故答案为：2．
下列元素名称或符号书写上都有错误，请改正．
（1）猛MN______（2）钙CA______（3）绿CL______
（4）镁Ma______（5）钠Ne______（6）汞HG______．
Unwanted e-mail may ______
A．cause companies to fail in business
B．cause wanted e-mail messages to lose
C．damage the credit of a company
D．do good to a small company
