【判断题】吡咯的碱性比四氢吡咯弱,而吡啶的碱性比六氢吡啶强。
【判断题】为使空调热交换更好,一般汽车空调的冷凝器装在散热器的后面。
【简答题】A.The cafeteria food is very bad. B.The cafeteria food is so scarce. C.The cafeteria food is quite delicious. D.The cafeteria food is much like home-cooked meal.
【判断题】带电体能否看成点电荷处理是相对的。( )
【单选题】对外汉语教学总体设计中,教学途径不包括()