节材要求施工现场()km以内生产的建筑材料用量占建筑材料总量的70%以上。
A.100
B.200
C.500
D.1000
参考答案:C
We must read between the lines, and sometimes _____ the lines, to fully understand the writer.[ ]
A. within
B. among
C. besides
D. beyond
下列不属于工业领域内部特点的是()。
A.资本增密
B.劳动增密
C.技术增密
D.排斥劳动