井下动力钻具有以下几种() A.涡轮钻具 C.电动钻具 B.螺杆钻具 D.单作用及双 发布时间:2018-03-06 04:51 │ 来源:www.tikuol.com 题型:多项选择题 问题: 井下动力钻具有以下几种()A.涡轮钻具C.电动钻具B.螺杆钻具D.单作用及双作用水力活塞栗钻具
题型:多项选择题 When some Chinese women were dancing to loud music in a park in New York, the people lived nearby called the police.A.whoB.whomC.whoseD.which 查看答案