根据历史记载，中国有了最早学校教育的形态是在()。
A.夏朝
B.商朝
C.西周时期
D.春秋时期
参考答案：A
当SDH网元接收到MS－AIS将如何响应？（）
A.向上游发送MS－REI
B.向上游发送MS－RDI
C.向上游发送MS－AIS
D.向下游插入MS－BIPErr
John Jenkins, CFA, is performing a study on the behavior of the mean P/E ratio for a sample of small-cap companies. Which of the following statements is TRUE（）
A. One minus the confidence level of the test represents the probability of making a Type Ⅱ error.
B. A Type I error represents the failure to reject the null hypothesis when it is, in truth, false.
C. The significance level of the test represents the probability of making a Type I error.
