After ________ the quality of this new machine, we are ready to go into production.[ ]

A. carrying out  

B. making out

C. squeezing out  

D. testing out

基金申购采取( )原则，投资者申购以申购日的基金份额净值为基础计算申购份额。

A．“未知价”

B．“金额认购、面额发行”

C．“面额认购、金额发行”

D．“先进先出”