在20世纪第二个十年,堪称中国历史转折之里程碑的是()
A.武昌起义、中华民国建立
B.《新青年》创办、武昌起义
C.五四运动、《新青年》创办
D.中华民国建立、五四运动
参考答案:D
下列变化不能通过一步实验直接完成的是( )
A.Fe→Fe3O4
B.Fe(OH)3→Fe2O3
C.Al→Al(OH)3
D.Na2O2→Na2CO3
Which of the following statements regarding the mark to market of a futures account is FALSE Marking to market of a futures account:()
A. may result in a margin balance above the initial margin amount and may be done more often than daily.
B. is only done when the settlement price is below the maintenance price.
C. effectively adjusts the price of the future to the new equilibrium level.