【单选题】合成后无需进行转录后加工修饰就具有生物活性的RNA是:( )
【单选题】You're late for work. You had a doctor's appointment, didn't you?
【判断题】If you're constantly late for work, you should always explain to your boos about your being late.
【判断题】人脉资源既要有广度和深度,还要有关联度。()
【单选题】听力原文:Hi, I'm Casey Evers with your news update. If you were late to work this morning because you were sitting in heavy traffic, chances are you were on Highway 36. Construction for the new toll road ...
【简答题】图示结构中,力矩分配系数u AB =______。
【简答题】图示结构中,力矩分配系数u AB =______。
【单选题】20140104四位二进制数,(从0000到1111)中,不含连续三位相同的数字共有(4)个。