引伸计标距应当（）矩形试样的宽度或圆试样的直径。
A.大于
B.等于
C.小于
参考答案：A
I feel it is your husband who _______ for the spoiled child.
A．is to blame
B．is going to be blamed
C．is to be blamed
D．should blame
在一条点对点的链路上，为了减少地址的浪费，子网掩码应该指定为______。
A．255.255.255.252 B．255.255.255.248C．255.255.255.240 D．255.255.255.196
