【判断题】
设A、B是Ω中的随机事件,则A∪B=A∪AB∪B
【判断题】
终边相同的角的同一三角函数的值相等搜索复制
【单选题】
设球面方程为(x一1)2+(y+2)2+(z一3)2=4,则该球的球心坐标与半径分别为( )
【判断题】
The past 22 years have really been amazing, and every prediction we’ve made about improvements have al come __true__
【判断题】
____Unless_____ they can get people in the organization to do what must he done, they will not succeed.
【判断题】
It is generally considered unwise to give a child ____whatever____ he or she wants.
【判断题】
The first glasses of Coca Cola were drunk in 1886. The drink was first __made___ by a US chemist called John Pemberton