圬工裂损的修理—般有表面局部修补、（）、表面风化的整治等三种方法。
参考答案：镶面石修理
It was not what he said but what he did that got him__________
A being praised B praising C to praise D praised
两样本均数差别的假设检验用t检验的条件是()
A.两总体均数相等
B.两总体方差相等
C.两样本均为大样本
D.两样本均为小样本
E.两总体均符合正态分布
