金融机构及其工作人员应当按照反洗钱的有关规定认真履行反洗钱义务，审慎地识别（）
A.大额交易
B.现金交易
C.可疑交易
D.转账交易
参考答案：C
An analyst conducts a two - tailed test to determine whether differences between the means of two populations exist: H0: μ1-μ2=0 versus H2: μ1-μ2≠0. Assume that the populations are independent, normally distributed, and have unequal and unknown variances. The critical value with 50 degrees of freedom is 2.126. The computed test statistic is t=1.753. Using a significance level of x=0.05, which of the following statements is TRUE（）
A. Use a t- test to reject the null hypothesis and accept the alternative hypothesis.
B. Use a t -test to accept the null hypothesis and reject the alternative hypothesis.
C. Use a z- test to reject the null hypothesis and accept the alternative hypothesis.
在深度为5的完全二叉树中，度为2的结点数最多为上 【1】 。
