______________ are the most liquid of all the money market instruments because they have an active secondary market and relatively short term to maturity.
A. Federal funds
B. Treasury bills
Commerical paper
D. Banker's acceptance
Banker's Acceptance 中文意思为:
叶轮进口端和出口端的外圆,其径向跳动量一般不应超过( )。
A. 0.03mm
B. 0.04mm
C. 0.05mm
D. 0.06mm
测量离心泵转子的径向跳动时,百分表的表杆应( )于圆周表面(即通过圆心)。
A. 平行
B. 垂直
C. 接触即可
D. 任意位置