请说出我国的传统节日有哪些?（最少五个）

相关推荐

• 我国传统节日有哪些?以及描写这些节日的诗句?
• 描写我国传统节日的诗句有哪些?
• 我国传统节日有哪些?以及描写这些节日的诗句?写三条!
• 请说出我国的传统节日有哪些?（最少五个）
• 有哪些文章记录了我国古代的科学发现?（最少三篇喔!）
• 请说出我国的传统节日有哪些?
• 描写我国传统节日的诗句有哪些?整篇或摘句都可以.
• 我国的传统节日有哪些
• 我国的传统节日有哪些
• 设向量a1=（1,4,0,2）,a2=(2,7,1,3）,a3=(0,1,-1,a),β=(3,10,b,4)(1)当a,b取何值时,β不能由a1,a2,a3线性表示?（2）当a,b取何值时,β可由a1,a2,a3线性表示?并求出相应的表达式我做的是设β=k1a1+k2a2+k3a3,带入后的非齐次线性方程组,并提出它的系数矩阵是 1 2 0 3 4 7 1 10 0 1 -1 b2 3 -a 4然后初等变换最终得 1 2 0 30 -1 1 -20 0 -a-1 00 0 0 b-2第一问线性无关则行列式不等于零则1*-1*-a-1*b-2≠0,应该是a≠-1且b≠2呀,可是答案是a为任意实数,b≠2,为什么我的解法错了,错在哪里,
• 阅读短文 Dear John,Miss you so much!I'm now in Hainan with my family.We got here on May 2nd and ate some sea fish in a restaurant.But I didn't find my backpack after I went into the hotei.So I went back to the restaurant.Luckily,the waiter had my backpack and returned it to me.I was so happy.The next day,we went swimming and had a lot of fun.On May 4th,we went shopping and bought a coconut for you.Tomorrow we'll be back to Beijing.Yours,Mike( )1.When did