tRNA搬运氨基酸时其与氨基酸相连接的核苷酸是() A.腺苷酸 B.鸟苷酸 C.胞苷 发布时间:2021-12-13 01:21 │ 来源:www.tikuol.com 题型:单项选择题 问题: tRNA搬运氨基酸时其与氨基酸相连接的核苷酸是()A.腺苷酸B.鸟苷酸C.胞苷酸D.尿苷酸
题型:单项选择题 —Would you like to see Beijing Opera with me tonight? —I'd like to, but I'm afraid I _______. I have to write to my pen friend. [ ]A. need B. needn't C. can D. can't 查看答案
题型:单项选择题 女性,13岁。自幼发现心脏杂音,近5年渐出现活动后发绀,活动量受限。查体轻度发绀及杵状指,胸骨左缘3、4肋间Ⅱ级收缩期杂音,肺动脉第二心音亢进。超声心动图示室间隔回声脱失15mm,双向分流。对选择手术适应证最有意义的检查是()。A.右心室造影B.肺动脉造影C.右心导管检查D.左心室造影E.主动脉造影 查看答案