患者缺失，作金属烤瓷固定桥修复，颜色D2

堆瓷时排水的目的下列哪项是错误的（）

A．提高瓷的烧结强度

B．减少瓷烧结时的体积收缩

C．排除杂质

D．增加各瓷层之间的致密度

E．排除气泡

Service (71) Architecture aims to provide a model for the creation of service components in a wide range of languages and a model for assembling service components into a business solution-activities which are at the heart of building applications using a (72) architecture.
Service Data Objects aims to provide consistent means of handling (73) within applications, whatever its source or (74) may be. SDO provides a way of unifying data handling for databases and for services. SDO also has mechanisms for the handling of data while (75) from its source.

A．consisted

B．builded

C．assembled

D．detached