重氮化法测定芳伯胺类化合物时，主要是在强无机酸存在下，芳伯胺与亚硝酸作用定量地生成重氮盐。( )
参考答案：对
______ as planned, our work was highly thought of.
A．Completed
B．Completing
C．Having completed
D．To be completed
电平表在跨接测量法测量电平时，阻抗应放在（）档。
A.高阻
B.600Ω
C.150Ω
D.75Ω
