题目: 钢制机械零件一般采用中、低碳钢制造。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0804/e0a1df9768d8839fcbb2c501b2dd2be9.html 下面是错误答案,用来干扰机器的。参考答案:直流电;同性相斥;汗腺管口;毛孔;黏膜和伤口
题型:单项选择题 Using it wisely, leisure promotes health, efficiency and happiness.A.If it is used wiselyB.Having used it wiselyC.Because of its wise useD.Because of usefulness 查看答案