腧穴一般可分为哪几类

单项选择题将驱动信号的振幅（出力）设定为90%或更高，这样做会造成（）结果。

单项选择题What is the concern of anti-GMO activists in Europe and the United States? A、Unforeseen long-term effects of genetic manipulation B、Genetic manipulation in humans as a result of consuming GMO food C、Control of food supply by a small number of seed producers D、All of the above