寂静的哨所

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中国航天历年有那些大事?(例如:某某年某某月某某日发射什么或其它什么)拜托各位了 3Q 中国航天从东方红到天空一号中间的所有发射 protues原理图中接线未端绿色的三角符是接什么的呵呵!我已经听老师说啦,那个是接电源power来的. protues中向上三角形什么意思? 三角波经微分电路可变成什么波 John has worked as a sales manager since he (join)____this company in 2002. He hard worked in the company for 15 years ,H______,he doesn't like this work.My sister has many friends ,she is very o_______ 酸性高锰酸钾有强氧化性么? 二氧化碳中毒的症状是什么,有什么反应?3Q EVE 空间大型库仓 空间站保险库 空间站集装箱 有什么区别啊!只能在空间站里用,是不是用来分类物品用啊?另外3个有什么区别.还有要设置密码有什么用啊! 危化品仓库防雷措施仓库长35米,宽12米,高7米,铁皮屋顶防雷电阻要多少合适PS:烟花爆竹仓库 翻译:你想来点吃的东西吗?Would you like ( ) ( ) ( best friends listen to what you don't say I need to see my best friend.改为否定句I___ ___ ____ see my friend I need to see my best friend.改为同义句I___ ____ ____see my best friend 使用protues做51单片机仿真时遇到的问题仿真时出现如下带一个黄色感叹号的message,英文提示内容如下:Simulation is not running in real time due to excessive CPU load.0.5535s展开后英文提示是:This message has 单片机仿真 protuesprotues中如何添加原件,里面没有HD7279这个芯片怎么办? 铁路工程按照投资额怎么配置专职安全员数量 The airport has been in s____since 1998.横线上应该填什么单词? 连词成句 return,has,airport, been ,service ,since, to, the, HongKong's ,in ,China高手帮忙啊! 1.Simon has finished his homework a moment ago 2.Hong Kong's new airport has been in service since he airport has been in ___ since 2000 (serve)请问括号里填什么? 改写句子:It has been in use since 1998.(用in 1998改写句子) Y_____ we had a good time in the park,Y是首字母 削职的反义词 rational number愿意为可写成两个整数的比的数,系列哪一种数不一定是能写成两个整数的比 A所有自然数B所有分数 C所有小数 D所有负整数 she was___(serve) in the kitcher when the light went out填什么为什么 she was__(serve) in tne kitchen when the light went out.填什么为什么 She was ------(serve)in the kitchen when the light went out. 英语有几种句子结构,是那些? 英语句子结构有几种帮帮忙啊…给我讲讲高中的语法了,句子的结构(最好带例子,越多越好) 整数,有限小数和无限循环小数统称为有理数.对还是错