停车设施的交通流线组织应尽可能遵循( )原则。A.双向行驶B.单向左行C.单向右行D 发布时间:2018-01-13 10:22 │ 来源:www.tikuol.com 题型:单项选择题 问题: 停车设施的交通流线组织应尽可能遵循( )原则。A.双向行驶B.单向左行C.单向右行D.渠化交通
题型:单项选择题 It ____ Jack twenty minutes ____ the math problem yesterday.A.took; to work outB.takes; worked outC.has taken; work outD.is taking; working out 查看答案