异相型游梁式抽油机与常规型游梁式抽油机的主要不同点之一是将减速箱背离支架后移,形成了 发布时间:2017-06-21 14:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 异相型游梁式抽油机与常规型游梁式抽油机的主要不同点之一是将减速箱背离支架后移,形成了较大的()。A、极位夹角B、曲柄转角C、水平距离D、平衡相位角
题型:单项选择题 .---I think we should buy a car now so that it will be convenient for us to go to work 。 ---______ , but do you think we have so much money ?A.You are dead rightB.Come off itC.You are jokingD.I don’t believe it 查看答案