“频率增益”功能有什么用途?
参考答案:
通过调整变频器的频率增益,可以用同一控制信号进行多台变频器的比例运行控制。
It isn't just big data specialists like data scientists and statisticians ______ to benefit from this boom of big data opportunities.
A.who stands
B.that stand
C.which stands
D.when stand
对质壁分离的正确解释是()
A.细胞质与细胞壁发生分离
B.细胞膜与细胞壁分离
C.原生质与细胞壁分离
D.原生质层与细胞壁分离