【单选题】Powerpoint 提供的幻灯片母版,主要是解决幻灯片的()。
【单选题】In sewage treatment, the term maceration refers to the process of ______.
A.
breaking up solid matter into fine particles
B.
precipitating non-decomposed waste in a collection tank
C.
chemically adjusting the sewage ph to 7.0
D.
eliminating bacterium coli from the sewage
【单选题】Powerpoint 提供的幻灯片母版,主要是解决幻灯片的()。
【判断题】幻灯片主题是指PowerPoint 2016提供的颜色、字体和效果搭配的模板,应用这些主题模板,可以快速美化幻灯片的版式,使演示文稿中各幻灯片拥有统一的风格。
【单选题】____ are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
D.
disinfection chemicals
【简答题】The processing of sewage(污水) requires considerable amounts of electricity. Many sewage treatment plants in the U.S. have become self-sufficient by using the methane gas (沼气)given off by sewage.