三螺杆泵排油时从动螺杆是靠()。A.油压力驱动 B.齿轮驱动 C.主动螺杆啮合传动 发布时间:2017-07-18 03:10 │ 来源:www.tikuol.com 题型:单项选择题 问题: 三螺杆泵排油时从动螺杆是靠()。A.油压力驱动B.齿轮驱动C.主动螺杆啮合传动D.皮带传动
题型:单项选择题 Liu Hulan would rather________in face of the enemy.[ ]A.die than to give inB.die than giving inC.die than give inD.have died than have given in 查看答案