— _____________ he have a good trip?
— Yes, he did.[ ]
A. Did
B. Does
C. Has
答案:A
黑盒测试也叫()
A.白盒测试
B.功能测试
C.结构测试
D.模块测试
用水泥胶砂强度检验方法测得的一组试块3d龄期抗压强度的数据:31.0kN,32.5kN,28.5kN,27.7kN,34.0kN和33.5kN,则该组试块3d的抗压强度为()。
A.19.5MPa
B.19.9MPa
C.20.4MPa
D.该组结果作废,应重做试验