A:all these last few
B:these all last few
C:these last few all
D:all last these few
某几何体的三视图如图所示,则该几何体的体积等于( )
—Because Tom fought with his classmates again this week.
如图所示,直线A、B分别为电源a、b的路端电压与电流的关系图像,设两个电源的内阻分别为ra和rb,若将一定值电阻R0分别接到a、b两电源上,通过R0的电流分别为Ia和Ib,错误的是( )