计算积分 A.
B.
C.
D.

单项选择题The Bike Shop paid 1,850 in dividends last year. The times interest earned ratio is 2.2 and the depreciation expense is $460. What is the value of the cash coverage ratio? ( )

单项选择题设下图所示电路中二极管导通时压降为0.7V，截止时电阻为∞，则图中（ ）。 A、VD截止，UAO= -8V B、VD截止，UAO= 8V C、VD导通，UAO= 4.7V D、VD导通，UAO= -4.7V