正常情况下,脐带中的静脉条数是()。A.5条 B.4条 C.3条 D.2条 E.1条 发布时间:2017-05-23 11:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: 正常情况下,脐带中的静脉条数是()。A.5条B.4条C.3条D.2条E.1条
题型:单项选择题 ---I know you _____ for Shanghai. When shall I come to pick you up? ---The train _____ at 9:30, so you’d better come here at 8:30.A. leave; leavesC. are leaving; leavesB. are leaving; is leavingD. leave; will leave 查看答案
题型:单项选择题 —I remember I left my laptop in the study last night. Why ________ here?—Oh, I thought you might need it so I brought it here for you.[ ]A. does it comeB. has it comeC. had it comeD. will it come 查看答案
题型:单项选择题 以下关于专利权被宣告无效后追溯力的哪项说法是正确的()A.宣告无效的专利权视为自始即不存在B.宣告专利无效的决定,对于在此之前已经执行或履行的判决、裁定或决定具有追溯力C.专利权被宣告无效之后,专利权转让人必须向专利权受让人返还转让费D.专利权被宣告无效之后,专利权必须向被许可实施专利人返还专利使用费 查看答案