6/28,21/98,18/84,9/42,( )
A.12/56
B.12/44
C.25/60
D.25/78
参考答案:A
Which of the following statements about Treasury Inflation Protected Securities (TIPS) is least accurate()
A. Inflation adjustments are made semiannually.
B. The coupon rate on TIPS is effectively a real rate of interest.
C. The coupon rate adjusts upward for inflation.
牛平均一次射精量为(),山羊平均一次射精量为(),猪平均一次射精量为(),兔平均一次射精量为()。一般牛羊精子密度大于猪的。各种家畜的鲜精精子活率一般为()。