【单选题】Lily has always wanted ________ the top student in her class, so she never gives up ________ even if she fails the exam sometimes.
【简答题】Frances is the top student in our class, but her aim is to _______(achievement) even better exam results.
【单选题】真核细胞核糖体单体及大小亚基的沉降系数分别为( )
【判断题】多层平壁传热时,若传热速率Q相同,则热通量q相同;同样的在多层圆筒壁传热时,若传热速率Q相同,热通量q也相同。
【单选题】弗洛伊德划分儿童心理发展阶段的标准是( )
【简答题】根据中文写出单词的适当形式。(5分) 小题1:Even though he is the top student in our class, he is very ________ (谦虚的). 小题2:He is very __________(心灵手巧的), and he is good at cards. 小题3:Please give up ________ (争论) abo...
【单选题】原核细胞和真核细胞核糖体的沉降系数分别为
【判断题】真核细胞核糖体的沉降系数为70S。( )