当建筑物设置地下室等设施时，基础的埋深至少要深于地下设施的埋置深度，为了保证建筑物的稳定性，基础埋深要随建筑高度增加而适当增大。( )
参考答案：对
John Cupp, CFA, has several hundred clients. The values of the portfolios Cupp manages are approximately normally distributed with a mean of $ 800000 and a standard deviation of $ 250000. The probability of a randomly selected portfolio being in excess of $1000000 is :（）
A. 0.3773.
B. 0.6227.
C. 0.2119.
巴比妥类药物的分子结构中含有酰亚胺基团，与碱溶液共沸即水解释放氨气。（）
