【单选题】The picture taken with my classmates ______ my school days to my mind.
【简答题】螺纹联接为什么要考虑防松?写出三种常用的防松实例,并做简要说明。
【单选题】The picture ______ my school days to my mind.
【单选题】I am a determined person. ____ I have made up my mind, nothing can change my mind.
【简答题】甲比乙多20%,也就是乙比甲少20%.______.
【判断题】如果甲比乙多20%,乙就比甲少20%。 [ ]