仅编码性菌毛的质粒是A.F质粒 B.R质粒 C.Col质粒 D.Vi质粒 E.K质粒 发布时间:2018-07-13 13:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: 仅编码性菌毛的质粒是A.F质粒B.R质粒C.Col质粒D.Vi质粒E.K质粒
题型:单项选择题 —Did you pass the driving test?—No.I ________ it,but I had little time practising.A.could have passedB.must have passedC.can't have passedD.shouldn't have passed 查看答案