石材幕墙的铝合金挂件厚度不应小于（）mm。
A.4
B.6
C.8
D.10
参考答案：A
This is _____ book. But where is mine?[ ]
A. him
B. his
C. he
D. himself
有如下数组声明：int num[10]；，下标值引用错误的是
A．num[10]
B．num[5]
C．num[3]
D．num[0]
