官方评选的“英超十年最佳球员”是()
A.希曼
B.坎通纳
C.希勒
D.贝克汉姆
参考答案:C
— Look, the light in the living room is still on.
—Oh, I forgot _______.
A.turning it off
B.turn it off
C.to turn it off
D.having turned it off
已知R1<R2,如图所示的四种不同接法中,其总电阻最小的是[ ]
A.
B.
C.
D.