A:looked u
B:looked after
C:picked out
D:picked u
The weight of a male lion can reach 240 kg, _____ an adult man.
下列物理量中,以科学家瓦特的名字作为单位的物理量是( )
At three in the afternoon my head____ ____ ____ ____
在如图所示的电路中,电源电压保持不变,开关闭合后,滑动变阻器的滑片向右移动时,三个电表的示数变化情况是( )