航速30节等于多少公里

有两根绳子,第一根比第二根长9分之1,正好长九分之一,两根绳子各长多少米? 压力表读数与拉力KN怎么换算 压力表单位共有几级,都怎么表示 一根绳子截去2/5,正好截去了8米.如果截去3/10,要截去( )米,截去与剩下的比是 请准确填出下面动物的"叫"声 鸟（ ）鸡（ ）羊（ ）牛（ ）马（ ）鹤（ ）猿（ ）狼（ ） 表示动物”叫”的（括号里只填一个字）鸟 鸡 狗 牛马 羊 狼 狮猿 鹤 龙 虎 比例尺问题,我应该在图上画几厘米?在1:20000的比例尺,那我应该在图上划几厘米? 土压力计算中,如何确定土的重度γ（KN/m3） What's the man over there?________.A My father B A doctor C American D Mr Li Hearing the noise,the man looked forward_____what was happening.A .to seeing B.to see为什么答案选B?不是looked forward to doing吗? What's happening there A.The cat is swiming in the lake.B.There is a man siting in front of the door.C.The boy is eatting a hamburger in class.D.A girl is jumping off the chair.为什麽选D ----What did the man say over there?-----He told us ____any further.There is danger ahead.A.don't go B.not goC.not to goD.to go I have not found my book yet; in fact ,I am not sure__I could have done with it .A whether B what c when D where 非典型肺炎与普通感冒有何区别?大家踊跃回答 both men had hardly had time to realize what was happening when they were thrown violently into the sea.正常翻译是,他们两个还没来得及意识到究竟发生社么事情,就被猛的抛入海里.我奇怪这里没有来得及的词啊,had i had hardly had time 尤其是 had time 用一根132cn的铁丝围城一个正方体模型,正方体的体积是多少 用一根长9.6米的铁丝围城一个正方体模型,这个模型的体积是( )立方米.若将它的表面糊上纸,那么需要（ ）平方米的纸 一根铁丝围城的正方体与长方体体积相等吗 把一个棱长是10CM的正方体木加工成一个最大的圆锥.这个圆锥的体积是多少? What the man said ______(record)by the police just now The man called police when he learnt what the parents were planning,according to the Press-Citizen.句中的 press-citizen是什么意思?最好哪位大虾能把这句话给翻译哈三Q! The young man who saw the car ______ into the river telephoned the police station.a.plunge b.pluThe young man who saw the car ______ into the river telephoned the police station.a.plunge b.plunged c.was plunging d.to plunge 为什么呢?个人感觉 11.What the man said to the police officer ________ by several other witnesses standing by.A.was disputed B.were disputed C.disputed D.be disputed 甲酒精4升,乙酒精6升,混合后浓度62％,如果甲乙都是4升,混合后浓度61％,甲乙两种酒精浓度各是多少? 甲酒精于乙酒精按2比3混合,含酒精量62%,如果用1比1混合,含纯酒精61%,甲乙各含纯酒精百分之几 甲种酒精与乙种酒精,按2：3的数量混合成的酒精中含纯酒精62%,如果甲乙两种酒精取同样多混合后的酒精中含纯酒精61%,甲乙两种酒精中各含纯酒精百分之几? 一根2米长的绳子,截去4分之1后,剩下这根绳长的（ );如果截去4分之1米,还剩下（ ）米 在举重时,肱二头肌以肱三头肌分别处于什么状态 举重运动员从点名到试举规定在几分钟内 把一个长是10cm的正方体木块加工成一个最大的圆锥.这个圆锥的体积是多少? 一个正方体木块的棱长是12厘米,若把它加工成一个最大的圆锥,这个圆锥的体积的多少?