具有实事求是、仔细、客观、节制等性格特征的客户属于（）。
A.理想主义者
B.行动主义者
C.实用主义者
D.现实主义者
参考答案：D
It was announced that only when the fire was under control ________to return to their homes.
A．the residents would be permitted
B．had the residents been permitted
C．would the residents be permitted
D．the residents had been permitted
滴定管的准确度分A、B两级。A级的容量（）仅为B级的1/2.
A.误差
B.允许差
C.偏差
D.方差
