题目内容

Chemical bonding to the DNA of a carrier molecule and the introduction of the hybrid DNA into a selected cell for reproduction and celluar synthesis.

A. 携带者
B. 载体
C. 运送者
D. 带菌者

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Major advances have been made in bioreactor designs, in process monitoring techniques and in computer control of fermentation processes.

A. 监控
B. 监视
C. 检测
D. 监督

developmental phase ______________。

non-sterile _____________。

acetic acid _____________。

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