已知命题p:∃x∈R,x﹣2>lgx,命题q:∀x∈R,x2>0,则( )
A:命题p∨q是假命题
B:命题p∧q是真命题
C:命题p∨(¬q)是假命题
D:命题p∧(¬q)是真命题
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.
如图所示,杠杆每小格的长度相等,质量不计,以O点为支点,杠杆的右端挂有重物M,支点左边的A处挂钩码时,杠杆平衡。将重物M浸没在水中,钩码移到B处,杠杆又平衡。则重物与钩码的质量之比为____ ,重物M的密度是 ____ kg/m3。
今年6月3日,塔吉克斯坦总统埃莫马利•拉赫蒙参观访问了紫金矿业总部。紫金山金矿位于我市的( )