简述环境规划的基本特征。
参考答案：
整体性、综合性、区域性、动态性、前瞻性、信息密集、政策性强。
称取9.3克部分变质的NaOH固体（含杂质Na2CO3）放入烧杯中，然后逐滴加入溶质质量分数为10%的稀盐酸至溶液的pH=7，共消耗了73克稀盐酸．此时溶液中溶质的质量为（ ）
A．5.85g
B．11.7g
C．13.6g
D．无法计算
A project manager needs to assess qualify on the project. To do so, he wants to measure the height of each table produced. However, that would be too expensive. In this case, it would be BEST to use （）.
A．benchmarking
B．a sample
C．a control chart
D．a Pareto diagram
