【简答题】测量的四要素:被测对象、计量单位、测量方法、 _________。
【单选题】肠腔中的氨基酸进入肠上皮细胞的转运方式为:
【单选题】Each educational system is not perfect in a strict sense, which has its ___________.
【简答题】测量的四要素( )、( )、( )、( );
【判断题】In the United States, each state has its own educational system.
【单选题】肠腔中的氨基酸进入肠上皮细胞的转运方式为