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斧子是什么简单机械 小球自某高度自由下落,它落地时的速度与落到一半时的速度比是多少? 1.How many ___can you see in the picture?A.tomatos B.tomatoes C.tomato D.the tomato 2.A:What woul1.How many ___can you see in the picture?A.tomatos B.tomatoes C.tomato D.the tomato2.A:What would you like,Ann?B:I'd like two ___.A,glass of milk B,glass 某人一只脚的底面积是200平方厘米,站立时对地面的压强为1.5*10的四次方帕,则当他在行走时对地面的压强为 光滑斜面倾角都是30,球的质量都是m,且都是静止的第四题 图1-49给出的四个图中,光滑斜面的倾角都相同,球的质量都是m,分别用不同方向的细线吊住,球处于静止.这四种情况 中,球对斜面的压力 S____have I seen such big apples里面填什么好呢? have you seen such a big door two storeys( )?A .two-storeys-high B.two-storey-highC.two storeys highD.two-storey-highs 一台真空包装机,关闭电源没有漏气的声音,打开时就有,也可以正常使用.经查看是在电磁阀位置,该怎么办电磁阀漏气是什么原因,需更换不 目前世界上最好的猪品种是什么? on their premises是什么意思?The inspectors are expected to persuade people not to smoke on their premises,but they do not have the authority to issue fines. ex the premises是什么意思Products shall be transported ex the supplier's premises经销协议里面的一句话! There is a kitchen on the premises什么意思? keeping cash on the premises is a security premise具体是指什么 no cash is held on the premises.请问后边的on the premises是什么意思 借端生事,企图引起冲突或麻烦的词语. 引起事故,闹事.是什么词语? 杂技“顶杆”表演,一人站在地上,肩上扛一质量为M的竖直竹竿,当竿上一质量为m的人以加速度a加速下滑时杆对下面的人压力的大小 自然课上,大家以小组为单位做实验,可丁强同学却在一边做小动作,如果你和他是同 英语翻译I pushed a pale .unwilling jenny onto the school bus. 从30m高的楼顶处,以5m/s的初速度竖直下抛一个小球,求经多长时间小球落地?落地时速度多大?(g取10m/s2) 急求求世界各地名贵的玫瑰花品种和简介,如保加利亚大马士革、法国白玫瑰、绿玫瑰等,需要8-10种,资料内容包括品种名、原产地、品种特征等； 形容所希望的事情,完全达到的词语是什么 渴望的事成为现实是指哪个词语? 不是及物动词后面要跟宾格吗,think是及物动词.I think they are great.为什么they 不用宾格呢? 一只猫和一只耗子在一个直径是100m的圆周上的同一个地点向相反方向运动,猫每分钟跑18.84m,耗子每分钟跑12.56m.当猫和耗子再次相遇时,猫比耗子多走了多少m? 不平等的看待是什么词语?借端生事,想要引起冲突.是什么词语? they support the cables from which the bridge has been suspended.这句话中from是什么意思 The starting point of an utterance which is known in the given situation and from which the speakerthe starting point of an utterance which is known in the given situation and from which the speaker proceeds is named t_____? Bread tastes (nice) with jam.(划线提问) Tastes jam with bread nice 连成句子 I promiss to godness,I will never hurt myself 翻译 I am scared l will hurt