随着采出液中聚合物浓度的增大,抽油机井的示功图()。A、明显变窄 B、明显肥大 C、 发布时间:2017-06-22 16:09 │ 来源:www.tikuol.com 题型:单项选择题 问题: 随着采出液中聚合物浓度的增大,抽油机井的示功图()。A、明显变窄B、明显肥大C、变化不大D、锯齿多
题型:单项选择题 -- Isn't it amazing that I met Francis at the Christmas party?-- Really? For how many years ________each other?A.didn't you seeB.haven't you seenC.don't you seeD.hadn't you seen 查看答案