赵志敬在英雄大会上违背誓言，被（）打了一掌
参考答案：小龙女
机床床身的毛坯大都是（）而成。
A.铸造
B.锻造
C.焊接
D.压力加工
Which of the following bonds has the shortest duration A bond with a:（）
A. 20-year maturity, 6 percent coupon rate.
B. 10-year maturity, 6 percent coupon rate.
C. 10-year maturity, 10 percent coupon rate.
