Questions 7 and 8 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions. Now listen to the news. What was the consequence of the 2001 protests in Argentina
A. Butchers and supermarkets were affected.
B. The ex-president was overthrown.
C. Roads to the capital were blocked.
D. Export taxes for farm products were cut.
地面垫层工程量中相应数据如下:主墙向净空体积为10.52m3,凸地面的设备基础所占体积为2.51m3,地沟的所占体积为0.78m3,柱及垛的所占体积为0.57m3,则该地面垫层工程量为( )
A. 10.52m3
B. 6.66m3
C. 7.23m3
D. 7.8m3