圆锥体积计算公式例题

有谁知道我的理想作文呀! 有人知道一些对写作有用的外国名言么?我想要中文的,后面最好带上说的人哦~ 人不能分泌纤维素酶 是怎么消化植物的啊?同问 Goods must be fit for any particular purpose _____________ to the seller.If the shop says a glue can mend china then it should.a.known b.to be known c.being known d.having been known 1,若圆(x-3)^2+(y+5)^2=r^2上有且只有两个点到直线4x-3y=2的距离等于1,则半径r的取值范围是（）A（4,6）B(4,5】C（4,7）D【4,6】2,若过定点M(-1,0)且斜率为k的直线与圆x^2+4x+y^2-5=0在第一象限内的部分有 真空收纳袋 几丝的好? 几道英语选择题,要解题思路1、The story happened in______spring of______1993.A．The; the B.a; the C.the;/ D/;/ 2、Would you be______kind as to step this way,please?A.As B.so C.very D.much 3、 When he turned professional at the age of 12 提问英语几道选择题与其解题思路1.My brother is only 20 years old, but he has___?A.a little white hair B.a few white hairsC.much white hairs D.some white hair2.Mary is always behind the others in study,but she is making__?A.progress 请问：蚂蚁从高楼层,比如说10楼掉下去, 1133.蚂蚁从二楼掉到地上,为什么?(非搞笑脑筋急转弯) 收集令人感动的句子最好令人深思 表面被部分氧化成过氧化钠的一小块钠,质量为2.48g.放入足量水中,收集所产生的气体,点燃该气体,气体恰好完全反映,则原钠块中含过氧化钠多少g? ---Why?where's my mobile phone?Maybe I left it on the plane.---My goodness!You____things behind.A.haven't B.didn't leaveC.had never leftD.never leave我错选为A 一个苹果 小时候我们在乡下生活,说起来很苦,很累.那时候,我们最爱吃的是苹果.可能是苹果太贵的缘故一个苹果小时候我们在乡下生活，说起来很苦，很累。那时候，我们最爱吃的是苹果。 订面条 ___ ____ ____ for noodles 用什么词来形容面条无 1、Hurry up,please.There is only ______ time left.A.a little B.little C.a few D.few2、______ Chinese people are ______ hardworking people.A./,/ B.a,/ C.The ,the D.the ,a 英语选择题解题思路 请教几道英语选择题.求解题思路.Which subject is ______ to learn , physics or chemistry?A.easy B.easier C. the easier D.more easierIt's well ______ that the earth ______around the sun .A.know ; goes B.knew;going C.knows;going D.kn 英语中26个字母可以组成多少个组合 （1） He insisted that he _____ in good health and ____ to work there.A.was,be sent B.is,is sentC.be,was sent D.be,send（2）Do you know _____ he expects will give us a talk.A.who B.whom C.that D.whose（3）It's uncertain_____ the experiment is w 英语选择题 可以告诉我解题思路吗?I agree with ____ of what you said, but I dong't agree with _____.A. most, nothing B. most, everythingC. something, most 角a与角b是有公共顶点的两个角,角a的两边与角b的两边分别垂直,且有5角a=角b则角a=?,角b=? 角1与角2有公共顶点O,角1的两边与角2的两边分别垂直,角1：角2=7:5,求角1与角2的度数 为什么对于一些易燃易爆物品要轻拿轻放 角a与角b有公共顶点,且角a的两边与角b的两边互相垂直,又角a=5/7角b,求角a和角b的度数. 什么是宇宙黑洞 宇宙黑洞 A+B=C+D这个反应,可逆反应,若减少A的量,A的转化率怎么变化?B的转化率怎么变化? 什么是黑洞 26个英文字母分为几类? 英语26个字母中分为哪两类,又分别有什么作用