建筑材料的基本物理参数有密度、表观密度、堆积密度，还有( )。 A．孔隙率、空隙率

Choose the words and finish the paragraph. (选择合适的词填空)   

     Linda and Mary are good friends. Linda is an American girl. Mary _______ (is/are)from London.

They are in the same school. Linda's parents work in a school. They _______ (teach/teaches) English.

They ______ (likes / like) cooking and eating Chinese food. They can speak Chinese. Mary's  mother

is a salesperson. She _______ (sell /sells) beautiful blouses and dresses. Mary's father _______

(work /works) in a factory. He is a good worker.

经营范围电子账册的备案内容包括：

A．批准证件编号

B．加工贸易进口料件和成品范围

C．单耗关系

D．加工生产能力

行政单位编制结账前的资产负债表，所依据的会计等式是（）

A．资产+负债=净资产

B．资产=负债+净资产

C．资产+收入=负债+净资产+支出

D．资产+支出=负债+净资产+收入

花岗岩属于（）岩石。

A.基性岩

B.中性岩

C.酸性岩

D.碱性岩

居民消费价格指数是从消费者角度衡量消费性商品和服务项目价格水平变化的一种( )指数。

A．商品

B．价值

C．价格

D．收入