标准稠度
参考答案：
是指为使水泥凝结时间、体积安定性的测定具有可比性，人为地规定水泥净浆处于一种特定的可塑状态
商品煤含矸率是指粒度大于（）mm的矸石的质量百分数。
A、25
B、13
C、50
D、100
A consumer is shopping for a home. His budget will support a monthly payment of $1 300 on a 30-year mortgage with an annual interest rate of 7.2 percent. If the consumer puts a 30 percent down on the home, the most he can pay for his new home is closest to:（）
A. $191518.
B. $210840.
C. $273597.
