【名词&注释】
抗压强度(compressive strength)、预应力(prestressed)、保护层厚度(cover thickness)
[单选题]砌墙砖试验方法(GB/T2542-2003)标准中抗折强度精确至(),抗压强度精确至()。
A. A、0.1MPa,0.01MPa B. B、0.01MPa,0.1MPa C. C、0.01MPa,0.01MPa D. D、0.1MPa,0.1MPa