16的算术平方根是_____________
4
根据算术平方根的定义即可求出结果．
解：∵42=16，
∴=4．
Is there a cinema around ______ I can see a film?
A．that
B．which
C．where
D．what
大断面竖井施工工艺有哪几步？
=4．
=4．