题目: 从能量相互转换的观点来看,液压泵是将带动它工作的电动机输人的机械能转成流动液的( )。A.机械能B.动力能C.压力能D.以上说法均不正确 答案: 参考答案:C解析:液压泵是将带动它工作的电动机输入的机械能转换咸流动油液的压力能。
题型:选择题 Anyone, if he _______ in his career, must be self- confident and make constant efforts towards his goal.A.succeedsB.will succeedC.is to succeedD.is about to succeed 查看答案