什么是有效作业

bring...to...take...to...(是不是只有bring.with...)All volunteers_______joy to the people they help in many ways.A bring B take C get D buy(为什么呢?) 化工装置中那些装置需要一开一备 什么叫负载均衡,冷备和设备? 污水设施特许经营权的报备是什么意思 英语翻译翻译成中文 One's winter is colder than famer years.you made our story so sorrow是什么 One's winter is colder than famer years.you made our story so sorrow. 怎么制作10HZ 无线电谐振电路?请给出电路图. 如何让自己提升高度、? 天香国艳, 怎样用歇后语来形容失败的国家男篮 站长把大西瓜切成薄薄的小片,盛在白瓷盘梨,送到每一个战士跟前.（改为不带“把”、“被”句式） 站长把大西瓜切成薄薄的小片 缩句 空心莲子草能饲养牛羊吗 站长把大西瓜切成薄薄的小片,盛在白瓷盘里,送到每一个战士跟前改为不带把被字句 有green day 的homecoming吗发到这里 homecoming day人们会做什么 操凭高望之 怎么简便 高薪稳住员工 (打一个历史词语) 法律制度在法国崛起中的作用 “在课余时间”用英语怎么说 三、 为什么说美国的政治地理位置比中国优越?政治地理位置在美国崛起中发挥了哪些作用? 配制纯净 氯化亚铁 怎样才能制得很纯净的氯化亚铁溶液?要求级别较高,在和硫氰酸根反应的时候没有红色络合物啊 这句话应该如何翻译：I was not due to go to university until the following October. “同时,我利用课余时间广泛地涉猎了大量书籍”用英语怎么说 英语翻译To facilitate standardization,in 1990 CDC organized the Cholesterol Reference Method Laboratory Network(CRMLN) to provide access to the NRS/CHOL for both manufacturers and clinical laboratories.The CRMLN has developed a method comparison 英语翻译In this context,our recent contributions have attempted todescribe charge hopping at the molecular level by estimatingat the quantum-chemical level the main parameters controllingthe electron-transfer rate among interacting molecules.14 I 司机控制不住他的车英语怎么说 英语翻译：他在开始做任何事情时,总是把自己投入进去（devote) 英语翻译Even where a government realizes the importance of a plentiful supply of trees,it is difficult for it to persuade the villager to see this.The villager wants wood to cook his food with;and he can earn money by making charcoal or selling w