Harsh and hazardous processes involving high temperatures, pressures, acidity or alkalinity need high capital investment, and specially designed equipment and control systems.
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High chemical and energy consumption as well as harmful by-products have a negative impact on the environment.
A. 否定的
B. 阴性的
C. 负的
D. 消极的
Enzyme reactions are carried out under mild conditions, they are highly specific, involve very fast reaction rates, and are carried out by numerous enzymes with different roles.
A. 特殊的
B. 专一性的
C. 特定的
D. 明确的
In addition, as only small amount of enzymes are required to carry out chemical reactions even on an industrial scale, both solid and liquid enzyme preparations take up very little storage space.
A. 大小
B. 比例
C. 规模
D. 刻度
Developments in genetic and protein engineering have led to improvements in the stability, economy, specificity and overall application potential of industrial enzymes.
A. 坚定
B. 稳定性
C. 恒心
D. 稳固