数学中什么叫分式

he has a lot of money but he never helps() 是others还是the others十万火急!限十!分钟 求解一道简单的英语单选Last Sunday,Linda hurt her ankle while__her new bike.A.rode B.riding C.having ridden D.rides 一道很简单的英语单选,we cannot be _ about our work,any small mistake may lead to a serous accident.A.very particularB.too cautiousC.extremely considerateD.quite serous他不是说任何小错误都会制造大麻烦么,为什么选项中一 The mother who lost her son insisted that the careless driver _____ for the traffic accident ______ yesterday.A.was to blame ; happening B.be to blame ; happenedC.was to blame ; happened D.be to blame ; happening 离心风机铭牌上标明,风量24100-16100m3/h,请问该范围指的是该风机能输出的最大或最小的风量范围?或是指该风机在高效区时的输出风量范围?我分析前者估计不太可能,管道阻力不同,完全有可能 求解几道最简单的英语单选!跪谢1.Hello,this is Simon.Could I to Jane,please?a) sayb) tellc) calld) speak2.They’re coming to our house Saturday.a) inb) atc) ond) with3.I think it’s very easy to debt these days.a) go intob) becomec) go 用卑微,一丝不苟,宽恕造句这三个词扩写成意思相连的一段话 造句：忍俊不禁麻烦,快一些! 收敛 宽恕 卑微 一丝不苟造句 广东话吊街是什么意思 粤语中 补街 粤语埋街食井水是什么意思? 广东话铺街的意思我想知道广东话“铺街”、“顶你的肺”的意思, 可爱的青菜 可爱的青菜,土地美丽的女儿,请用你朴素的光辉照耀我.你感人的色彩是生命的象征.生动与纯粹,简洁与丰润,这些高贵品质的融汇,于人何等艰难,于你何等自然.我不知道哪一种绿色 可爱的青菜答案 碳的质量分数相同的有机物随便来两组两种有机物的相对分子质量不同 She seldom speak English after class,For she was afraid( )mistakes in grammar.A:making B:to make C:to be madeWorking with a group( )提高了我的口头表达能力Two foreigners are in the sitting room.One is Jack and( )is PeterA:other B:the other She is well-known ____ her poems and she is also famous ____ an actress.A：for;for B：as;for C：for;as D：by;for ___ hearing the good news,they jumped with joy.A：For B：To C：On D：At His father will be back from London ____ a few days.A：s 2.5moIBa(OH)2中含有_个Ba2+,含有_个OH- 0.2mol的Ba(OH)2中含有多少mol的Ba2,多少mol的OH-? he works hard .he wants to pass his exams .为什么works wants后面要用S 什么情况下要用S 青菜 可爱的青菜,土地（ ）的女儿,请用你朴素的光环照耀我.你感人的色彩是生命的象征.生动与纯粹,简 she works hard .(同义句转换) 可爱的青菜,土地忠诚的女儿,请赐给我蓬勃的升级和一切的美德 意思 He works as hard as______A:an ant B:a mouse C:a bird最好能把这几个都给回答了2.He is as strong as________.a.a tiger b.a pig c.an ox3.He moved as__________as a xink(眨眼).a.quick b.slow c.quickly 风机铭牌上一下内容什么意思? 48.3 SP; 0.075 DENS ; 70 DEGF; UB DISE; CW ROT. 风机上的标牌写着尘土及固体杂质15Omg/m3是什么意思?颗粒是多厚呀?听的明白就行谢谢 零落,断续,收敛,宽恕,卑微,一丝不苟,请写出这些词语在词典里的正确意思.一定要是词典里的,嘻嘻 零落、断续、收敛、宽恕、卑微是两个字的词语,一丝不苟造句子要用里面的5个词 谁能帮我用 零落 断续 收敛 宽恕 卑微 一丝不苟 中任意选择3个词语写一段话,（3个词在一句话里）40字以上 用零落,断续,收敛,宽恕,卑微,一丝不苟写一段话 已知2的a次方等于5,2的b次方等于3.2,2的c次方等于3.2,2的d次方等于10,试求a+b+c+d的2中解法明天要用