单项选择题
A.7.07V B.5V C.14V D.10V
A.iL（0+）=1A；UL（0+）=4V B.iL（0+）=2A；UL（0+）=0V C.iL（0+）=0A；UL（0+）=8V D.iL（0+）=1A；UL（0+）=-4V
A.6；4.8 B.12；9.6 C.4；3.6 D.6；9.6