磨钛合金应选择超硬磨料磨具( )。
A.CBN
B.MBD
C.DMD
参考答案:A
如无特殊说明,复利计算的计息期为()。
A.6个月
B.1年
C.2年
D.4年
The loss has not yet been ________ accurately, but it is believed to be well beyond a hundred million
dollars.[ ]
A.calculated
B.considered
C.completed
D.controlled