若x=1是一元二次方程ax2+bx-2=0的根，则a+b=______．
把x=1代入方程ax2+bx-2=0，
可得：a+b-2=0，
解得：a+b=2．
So far no agreement has been reached in the business talk as neither side would accept the conditions of _____. [ ]
A. others
B. the other
C. either
D. another
工业厂房可靠性鉴定中，子项若“不符合国家现行标准规范要求，影响安全或影响正常使用，应采取措施”，则评定等级为( )。
A．a B．b C．c D．d
