问题:我国发生的严重急性呼吸综合征(SARS),很快波及到许多省市。这...
Sunday, September 11, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
问题:一位血浆胆固醇很高的病人就诊,经一系列检查医生发现他血循环中的L...
Friday, September 16, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:真核细胞染色质的基本组成单位是核小体。在核小体中()...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:氨基酰tRNA中,氨基酸与tRNA的结合键是()...
Friday, September 16, 2022
Sunday, September 11, 2022
Monday, September 12, 2022
Friday, September 16, 2022
问题:在高干病房,医护人员称呼病人总是用"赵书记"、"钱局长"等,语调...
Sunday, September 11, 2022
问题:在真核生物中,经RNA聚合酶‖催化产生的转录产物是()...
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
问题:男性,病史2周,贫血伴周身出血点,浅表淋巴结不肿大,胸骨压痛(+...
Friday, September 16, 2022