挑战习题
1/5单选题
难度:

1.下列关于功率的说法正确的是 ()
A 做功越多的机器,其功率一定越大
B 行驶的汽车,在发动机输出功率一定的情况下,速度越大,牵引力越大
C 做功越少的机器,其功率一定越小
D 做功越快的机器,功率越大
提示1:
IOeJqeS9k+WNleS9jeaXtumXtOWGheaJgOWBmueahOWKn+WPq+WKn+eOh++8mw==
提示2:
IOeUseWFrOW8j1A9Rnblj6/nn6XvvIzlvZPmsb3ovabovpPlh7rlip/njofkuIDlrprml7bvvIznibXlvJXlipvkuI7msb3ovabnmoTpgJ/luqbmiJDlj43mr5Q=
正确答案:RA==
PGRpdj7niankvZPljZXkvY3ml7bpl7TlhoXmiYDlgZrnmoTlip/lj6vlip/njofvvJvlip/njofot5/niankvZPljZXkvY3ml7bpl7TmiYDlgZrnmoTlip/mnInlhbPvvIzpgInpoblB44CBQ+mUmeivr++8jETmraPnoa7vvJvnlLHlhazlvI9QPUZ25Y+v55+l77yM5b2T5rG96L2m6L6T5Ye65Yqf546H5LiA5a6a5pe277yM54m15byV5Yqb5LiO5rG96L2m55qE6YCf5bqm5oiQ5Y+N5q+U77yMQumUmeivr++8mzwvZGl2Pg==