朝鲜机车

__in thought ,he almost ran into the car in front of him.A losing B having lost C lost D to lost哪个对呢?losing 和having lost有什么区别呢? give oneself over to sth put out,put up,put off,put down四个词分别是什么意思 开关电源变压器怎么测量一二次绕组电阻值?为什么里面的变压器2端每端有几只引脚,而在一端任意两只引脚阻值都是零点几欧?（该变压器应该是300V转24V的变压器） voa special english的语速大概是多少呢我英语还可以,听懂当然完全没问题,不过普特英语听力上有voa special english的听写,试了一下感觉打字速度跟不上播报的速度啊.这样的话英文打字速度会不会 听多了voa慢速英语会不会更难适应稍快的语速啊?如题 会不会听多了慢的 快的就更跟不上了啊?那怎么过度啊^^^^^^ 华研外语大学英语四级标准听力900题test1开头的曲子是什么 I took him to the cinema?改为who开头的疑问句怎么改? I am going to_ him _the cinema_ _ _ _我准备带他去看电影,使他高兴起来 Let's take him to the cinema.(同义句转换） —— —— taking him to the cinema. over是什么词性 英语翻译摘 要随着我国市场经济的不断完善以及中国医药市场的对外开放,中国医药行业的竞争日益加剧,企业环境的不确定性和复杂性也在不断的增加.“人力资源”已成为众多企业在角逐中 over的词性In 1929,three years after his flight over the North Pole,the American explorer,R.E.Byrd,successfully flew over the South Pole for the first time.his flight over the North Pole这个over应该是动词吧,successfully flew over the South 英语翻译我想找一个可以在线翻译的辞典（中译英）,要有分单词和短句分开的 冰箱那 里是冷疑器 那里是蒸发器 VOA慢速英语和VOA标准英语除了在语速上的却别外其他方面是不是都一样的? 电冰箱中蒸发器起到吸热蒸发作用,把液体变成气体,即然它起蒸发作用,为什么还是冷的? took him to hospital为什么医院前面不加the呢 put off put up put on put out 的区别 hide catch 过去式 The boy wanted to ride his bicycle in the street,but his mother told him___A.not to,B.not to do 正确答案选A不选B为什么? The boy wanted to ride his bicycle in the street,but his brother told him___A.not to B.not to do C.not to do it 为什么不选择B或C The boy wanted to ride his bicycle on Nanbin Road,but his mother told him_______A:not to B:not to do C:not do it D:do not to选哪个?为什么? The girl wanted to ride her bicycle in the street,but her mother told her___ A.do not to B.not to do C.not do it D.not to 2The boy wanted to ride his bicycle in the street,but his mother told him ___.A not to do Bnot do it Cnot to 带锯条的规格如何识别 加工中心的寻边器有什么作用啊 一长为l、重W的均匀梯子,靠墙放置,如图.梯子下端连一劲度系数为k的弹簧．当梯子靠墙竖直放置时,弹簧处于自然长度.墙和地面都是光滑的．当梯子依墙而与地面成a角且处于平衡状态时,W、k 轻质弹簧直立在水平地面上,将质量为m的物体轻轻地放在弹簧上,达到稳定状态时弹簧被压缩了L,则此时弹簧具有的弹性势能为多大我觉得重力势能全转化为了弹性势能,W=mgL,但是答案是mg=kL,K=mg 水平地面有一轻质弹簧,下端固定,上端与物体A相连接,整个系统处于平衡状态,现用一竖直向下的力F压物体A,使A竖直向下做匀加速直线运动一段距离,整个过程中弹簧一直处在弹性限度内.下列 双金属带锯条 齿形 4/6 I ’d away be with 我自己虽然能翻译,但不确定,