He _________ fruit, but he likes nuts.
A:doesn't like
B:don't like
C:likes
用如图所示滑轮组提起重300N的货物,人所用的拉力为200N,绳子的自由端被拉下1m,在此过程中,下面说法正确的是( )
能保持水的化学性质的粒子是( )