——Lily, is this ___ ipad?
——No, it's not mine. I think it's Lucy's.
A:my
B:your
C:his
D:her
2.6×105kV=____ V;3×107Ω=____ MΩ
被除数是三位小数,除数是两位小数,同时去掉它们的小数点。商()
将如图甲的滑动变阻器连入图乙电路的a、b两点间,当滑片P向C端移动时,电灯L逐渐变亮,则滑动变阻器连入电路的接线柱应该是( )