伯牙绝弦出自哪里

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为什么光电感应器能感知的物理量单位是米秒,什么意思?比如防盗报警器的探测精度是20ms,立体库中光电定位器的精度是30ms,这个单位是什么意思? 有纺织机用的光电感应开关吗? There was no people to take care of the children.哪里有错 英语翻译是该翻译成有件事(为啥有some)还是有些事(为啥是was)?business在这里是可数还是不可数? there are many things to take care of中为什么要接of To take good care of people who are close 甲乙两个仓库共有化肥49吨,如果甲仓库运出五分之一……甲乙两个仓库共有化肥49吨,如果甲仓库运出五分之一,乙仓库运进2.4吨,那么两仓库的化肥数量正好相等,甲乙仓库各有化肥多少吨? 用所给词的正确形式填空 题:There (be) some tea in the cup.下面还有题哦!There (be) some tea in the cup. 2.Are they (work)hard now? 3.This morning Mrs、Sawter goes (shop). 4.There are some ( There is some tea in the cup 用how mang 来问 There ______great salad as well as drinks and ice cream.(括号内填什么) A.is B.are C.have 推理问题 :有三个盒子,分别是金盒子,银盒子,铜盒子有三个盒子,分别是金盒子、银盒子、铜盒子,金盒子说金砖没在我这,银盒子说金砖在我这,铜盒子说金砖没在我这.这三个盒子有一个说 桌子上摆着金盒子,银盒子和铜盒子.金盒子上写着“珠宝不在此盒子中.”银盒子上写着“珠宝在金盒子里.”铜盒子上写着“珠宝不在此盒子中.”已知,这三句话中只有一句是真的,那么我们可 “无论金银铜铁,找个盒子,把心珍藏,一切只求合适就好. The children are drawing pictures.(改为一般疑问句) 最后一头战象中人对大象感情很深 具体表现在4个 最后一头战象中的大象把自己埋葬在什么地方 八个词组互译(中译英)麻烦一下,⊙﹏⊙b汗1.得到一份无偿的/有偿的工作2.做得好3.遵守基本的规则4.把……当份工作来做5.同时6.及时7.准时8.第一个做……麻烦,急死了, 并列名词作定语后面的单复数 We have great hamburgers and great French fries的意思 我们有上好的沙拉,还有饮料和可乐 we also have geart salad ,___ ___ ___ drinks and cola .把空填上 蔬菜的霉菌可以存活多久如题,蔬菜的 读这个片段,我感觉到这一只什么的松鼠?这个片段还流露出作者什么的感情?就是《跑进家来的松鼠》! 某机床厂一车间第一季度完成了全年计划的3/8,第二季度完成全年计划的3/5,第三季度完成全年计划的1/4.超额完成了全年计划的几分之几 《墨鱼自祸》的翻译文言文请大家踊跃回答 初二英语按要求改写句子1.This piece of music is dramatic(对划线部分提问dramatic)2.My brother bought me a pen (改为同一句)My borther ( )a pen ( ) ( ).3.The woman likes classical music (对划线部分提问c 初二英语、按要求改写句子1、Can they speak French?I want to know (合并为一句) 每空一词I want to know __ __ __ speak French.2、Li Lei draws better than anyone else in his class (改为同义句)Li Lei __ 乌贼求全则么翻译 改写句子1.原句 Miss Lee became our English teacher four years ago.改写为; Miss Lee[ ].(be) 2.原句;My father started work in beijing in January.改写为; My father[ ] (work) 3.原句;l first met her six months ago.改写为;l[ ].(know) 4. 英语翻译呴水而水乌,‘乌’意思徒知自蔽以求全,不知灭迹以杜疑,意思知自蔽以求全,‘知’意思则呴水以自蔽,‘则’意思知自蔽以求全,‘以’意思 初二英语改写句子we call it the great wall station.(改为被动语态)___ ___ ____the great wall stationhe told us some customs of england(改为被动语态)____ ____ ____ some customs of englandyou can't see the stars in the daytime ( 菜地蜗牛怎么治 爬行的小虫有哪些jj