DS70电磁涡流刹车每运转(),对固定在两侧的黄油嘴一次注入50ml润滑脂。
A.8h
B.12h
C.24h
D.48h
参考答案:C
— Would you like to visit Singapore?
— No. There is not ____ to do there. [ ]
A. much
B. many
C. much thing
D. many things
通常金融工具的到期日或距下一次重新定价日的时间越长,并且在到期日之前支付的金额越小,则其久期的绝对值( )。
A.无法判断B.越小C.越大D.不受影响