第四章单元测试
Sodium hydroxide and calcium hydroxide can be used instead of potassium hydroxide to neutralize the acid.
Hot air blows into this dryer to bring the sugars humidity level down to 0.05 percent, that standard for table sugar.
The main resistance to the flow of heat or mass to a surface lies within the laminar sublayer.
Filter cakes are formed late in the fluid flow.
Extraction may be used to separate more than two components; and mixtures of solvents, instead of a single solvent, are needed in some applications.
Heat fluxes may then be based either on the inside area or the outside area of the choice is arbitrary.
Any evaporator that uses pump to ensure higher circulation velocity is called a forced circulation evaporator.
If the feed is introduced at one point along the column shell, the column is divided into an upper section, which is often called the stripping section, and a lower section, which is often referred to as the rectifying section.
Drying is an absolute term that means a certain value.
A:对 B:错
答案:对
A:错 B:对
A:对 B:错
A:对 B:错
A:错 B:对
A:错 B:对
A:对 B:错
A:对 B:错
A:对 B:错
