向量a=(1，sinx），向量b=（2，cosx），向量c=（-1,2）

如何控制锡丝、锡膏的浪费 Are these your hair c_____?Yes,they are.根据首字母填空哦.I don't have any yellow hair clips.(改为同义句）I _______ ________ yellow hair clips. 锡丝 锡条 锡膏属于哪种经验范围 These are your sister's hair clips 改为同义句 锡条、锡丝、锡锭、锡膏、锡球、加工批发锡条、锡丝、精锡锭、锡球、电解锡板、价格实惠、质量保证、请电13790501166 The hair clips here are very fancy,h__,they are too expensive 锡和焊锡膏是一样东西吗 淀粉对人体有什么害处? Could you tell me where the toilet is 同义句Could you tell me where ____ ____ the toilet Could you tell me where the copier is,please?这Could you tell me where the copier is,please?这里的could能换成can嘛,为什么要用could呢? what about going for a walk?-_ -What about going for a walk?-What about going for a walk?-_____________A.That's terrible B.Sorry,but I'm tiredC.Yes,I do D.No,too bad what about ——（go）out for a walk? mirror living room a in is my there big可以组成什么句子 there is three beds and a mirror in the room?哪错了? is,a,two,my,there,end,room,tables,and,mirror,in（连词成句） 三顾茅庐这个故事的梗概（50-80字左右） 三顾茅庐的故事（150字左右）还要写出这篇成语故事给我的启示 某烃的分子式为C4H10不能使溴水褪色但可使酸性KMnO4溶液褪色则此烃的结构有（ ）A.2种B.3种C.4种D.5种C4H10改为C8H10 某液态烃为CmHn,相对分子质量为H2的60倍,它能使酸性KMnO4溶液褪色,但不能使溴水褪色在催化剂存在下 12g该烃能与0.3molH2发生加成反应,生成饱和烃CmHp,则m、n、p分别为多少.若该烃在铁作催化剂 let's get right to the point啥意思啊 get to a point 那he got to a point where he could hardly move around during the There is a TV in Lily s(的）room.改为同义句 There is also a television in my room (同义句)填空 --------- ----------- --------- in my bedroom,-------------. There is a new TV room in our school改成同义句 蛋白酶和胰蛋白酶以及胃蛋白酶的区分 C=Q/U是定义式,那为什么增加介质,还能改变C呢? c=q/u不是比值定义 DOS格式化命令format c:后面加/q,/s或/u,可以在format c:后面全部加上/q/s/u吗?加/q/s/u三个字母时是否有前后顺序? 元素周期表每一个数字 英文 能表示什么?举例说明 谁能帮我解释一下元素周期表的一些符号代表的意思和它的排列规律?如：什么是原子序数、族等等?（本人还没学这些,只是想了解了解） beat about the bush