【单选题】酚试剂分光光度法检测室内空气中甲醛,标准曲线的绘制时,以()作参比。
【单选题】下列选项中,用于实现接口的关键字是( )
【多选题】According to Chinese and German government officials and agribusiness executives, what benefits does digitalization have?
A.
It can ensure production capacity.
B.
It can protect the environment.
C.
It can expand sales channels.
D.
It can reduce pollution.
【单选题】下列选项中,用于实现接口的关键字是 ( )
【单选题】《公共场所空气中甲醛测定方法》(GB/T18204.26-2000)(酚试剂分光光度法)测定空气中的甲醛,绘制标准曲线时与样品测定时()。
【简答题】Today, it has over 250,000 employees and operates in the agribusiness, 2 and telecommunications markets.
【判断题】CP is one of the first multinational enterprises to invest China's agribusiness.
【判断题】The term of "agribusiness” covers the complex of farm-related businesses.
【判断题】酚试剂分光光度法检测室内空气中甲醛浓度,标准曲线的绘制是以甲醛含量为横坐标,吸光度为纵坐标,并计算回归线斜率。