泥浆的性能指标包括 、 、 静切力、 、胶体率、失水率和酸碱度

胶体率

A. 坍落度

B. 相对密度

C. 粘度

D. 含砂率

A．0．01A

B．0．1A

C．1A

D．100A

Read the article below about business on line. For each question 31—40, write one word in Read the article below about business on line. For each question 31—40, write one word in CAPITAL LETTERS on your Answer Sheet. INTERNET: A COST-EFFECTIVE WAY TO PROMOTE BUSINESS The Internet is changing the way people shop and purchase goods. It has created a new market WITH great opportunities for people running a small home-business and gives them a big advantage over the typical retail establishment. Before, if a customer wanted to buy a stereo for example, they had to jump into their car, go to a （）