题目内容

所谓负极搭铁指的是在采用单线制时将蓄电池的负极用导线连接到发动机或底盘等金属车体上称为负极搭铁。

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The main type of fermentation in the early stage of kimchi fermentation is iso-lactic acid fermentation.

In the process of food fermentation, alcohol has preservative effect are mainly depending on its concentration.

The main biochemical action in the process of vinegar brewing is ( ).

A. saccharification
B. lactic acid fermentation
C. alcohol fermentation
D. acetic acid fermentation

Microorganisms available for traditional fermented food include（）

A. Fungus
Bacterium
C. Yeast
D. Mould