采用质量法计算混凝土的砂石用量时，必须考虑混凝土的含气率。( )
参考答案：错
解析： 采用体积法计算混凝土的砂石用量时，必须考虑混凝土的含气率。
The teachers in Senior High Three would like to answer ______ worry the students, especially when the College Entrance Examination is coming.
A．all the questions they think
B．whatever questions they think
C．any questions they think
D．whatever questions they think that
在分析开发区固体废物类型和发生量时，分析固体废物减量化、资源化、无害化处理处置措施及方案，可采用固体废物( )的方式进行分析。
A．矩阵表
B．网络表
C．流程表
D．层次表
