测定外加剂水泥砂浆工作性时，是以砂浆流动度为180ｍｍ±10ｍｍ时的用水量作为基准砂浆流动度的用水量。（）
参考答案：错
The medical team left the village with great satisfaction, ________a lot of local villagers. [ ]
A. treating
B. having treated
C. to treat
D. treated
绝对误差在真实值中所占百分比叫相对误差
