根据《焊条规程》规定,焊条重复烘干的次数不宜超过()。
A.2次
B.3次
C.4次
D.5次
参考答案:B
Effective duration is more appropriate than modified duration as a measure of a bond’s price sensitivity to yield changes when:()
A. the bond contains embedded options.
B. yield curve changes are not parallel.
C. the bond is a floating rate security.
口语交际应培养学生表达和应对的能力,使学生具有文明和谐地进行人际交流的素养。