【简答题】变频器,按滤波方式不同可分为电压型和________型两种
【单选题】The school offers a ________ of extracurricular activities.
【简答题】She says that non-native speaker students need to anticipate and ______ in order to get involved in seminar discussions.
【单选题】For ____ interested in getting on line, the school offers an Internet bar.
【单选题】The college offers a more mature environment in which to learn than a school.
【单选题】The school offers a variety of extracurricular activities .
A.
homework you do after class
B.
activities that are not part of the usual school course
C.
interesting and difficult assignments that take extra hours
【简答题】变频器,按滤波方式不同可分为电压型和()型两种。A. 电流
【单选题】乌申斯基认为,复习是学习之母,他形象地将学习中不注意复习的现象比喻为醉汉拉火车,边拉车边丢货,到家时只剩下一辆空车。这反映了( )的教学原则