猜你喜欢
- 1直线y=x+b与曲线 x=cosa,y=sina,(a为参数,且-π/2
- 2what would you like ------------supper a.in b.for c.of d.on
- 3We had great fun yesterday.We went to the zoo.We were happy.
- 4一辆质量为5t的载重汽车在水平公路上以15m/s的速度匀速向右行驶受到的摩擦力为2000N.
- 5如图8所示,在⊿ABC中,∠BAC=4∠ABC=4∠C,BD垂直CA的延长线于D,求∠ABD与∠BAD的度数
- 6已知a+b+c=3,(a-1)3+(b-1)3+(c-1)3=0,且a=2,求代数式a2+b2+c2的值.
- 7【(x+2y)的2次方+(x+2y)(x-2y)】/(2x) 其中x=2,y=2分之1
- 8How do you like your coffee?A Black please B It tastes good
- 9碳酸氢铵是一种重要的铵盐.实验室中,将二氧化碳通入氨水可制得碳酸氢铵
- 10《爱莲说》中主要是写“莲之爱”,为什么还要写“菊之爱”“牡丹之爱”呢?