如图所示电路中,电源电压不变,闭合开关S,当滑动变阻器的滑片P向右移动时,则下列说法正确的是( )
A:电流表A2与A的示数的比值将减少
B:电压表V的示数与电流表A的示数的比值将减少
C:电压表V的示数与电流表A的示数的乘积将增大
D:电流表A与A1的示数的比值将增大
3a+2b可以解释为____。
One day Eddie and Hobo looked at the ____. Eddie thought he saw a____but Hobo thought it was a ____. Because Hobo saw one ____. Eddie thought there were many bright ____and it was too____, so it couldn't be a plane.