吹脱捕集气相色谱法测定水中挥发性有机物时,吹脱时间的长短对挥发性有机物的分析无影响。
参考答案:错
解析:吹脱时间的长短对挥发性有机物的分析有影响。
—The skirt looks different from others and it is nice.
—Thanks. It _____ by my mother last month. [ ]
A. made
B. is made
C. was made
三相四线制的不对称电路,一相负载短路或断开另外两相负载仍可正常工作