混凝土缺陷修补方案的内容有混凝土裂缝修补、剥落与蜂窝麻面修补、防渗与堵漏、()、结构火灾后修补。
A、平整面修整
B、结构补强
C、增补钢筋
D、倾斜修正
参考答案:B
The number of students admitted annually to this school from more thart 2.000 in the year 2.000 to some 3,000 last yeat.
A.increases
B.has increased
C.is increasing
D.increased
社会化主要有哪些类型?各自的含义是什么?