4的算术平方根是 ．
2.
试题解析：根据算术平方根概念即可求出结果．4的算术平方根是2．
考点: 算术平方根的定义.
有机粘接技术粘接力强、（）较高，但不如焊接和铆接。
A．强度
B．疲劳强度
C．粘接强度
D．温度
To his joy, the suggestion he put forward at the meeting was _______ immediately.
A．adopted
B．abandoned
C．argued
D．avoided
