花朵簇簇(ABCC)____、____、____
十全十美(ABAC)____、____、____
亮晶晶(ABB)____、____、____
My mother often plays table tennis __________my father doesn't like sports.
体积均为200cm3的木块和合金块,放入水中静止时的情况如图所示,已知木块重为1.8N,合金块重为6N,则木块受到的浮力为 ____ N,合金块受到的浮力为 ____ N.
商鞅变法时制作“商鞅铜方升”标准器,秦王嬴政统一六国后,又加刻诏书发到地方,其主要影响是