计划工作的核心环节是决策。
参考答案：对
刑事案件的侦查都由公安机关进行。
Which one of the following bonds has the shortest duration（）
A. Zero-coupon, 10-year maturity.
B. Zero-coupon, 13-year maturity.
C. 8% coupon, 10-year maturity.
