题目内容

The present-day large scale production possesses of these products are essentially scaled up versions of former domestic arts.

A. 鳞片上面
B. 上面尺寸
C. 按比例放大
D. 按比例缩小

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Paralleling this development of product formation was the recognition of the role microorganisms could play in removing unpleasant wastes and this has resulted in massive world-wide service industries involved in water purification, effluent treatment and waste management.

A. 过滤
B. 提纯
C. 涤罪
D. 净化

To overproduce specific essential primary metabolites such as glycerol, acetic acid, lactic acid, acetone, butyl alcohol, butane diol, organic acids, amino acids, vitamins, polysaccharides and xanthans.

A. 过度生产
B. 高产
C. 过分
D. 结束生产

To overproduce specific essential primary metabolites such as glycerol, acetic acid, lactic acid, acetone, butyl alcohol, butane diol, organic acids, amino acids, vitamins, polysaccharides and xanthans.

A. 甘油;丙三醇
B. 丁醇;酪醇
C. 丁二醇
D. 多糖;多聚糖

To produce useful secondary metabolites such as penicillin, streptomycin, oxytetracycline, cephalosporin, gibberellins, alkaloids, actinomycin.

A. 代谢反应
B. 代谢
C. 代谢分子
D. 代谢物

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