【单选题】When is the best time for upperclassmen to sell products to college freshemen?
A.
The best time is move-in day.
B.
The best time is when they become sophomore.
C.
The best time is when they become juniors.
D.
The best time is when they become seniors.
【简答题】点焊的工艺参数主要有焊接()、()、()以及()等。
【单选题】【§5.1】液压系统故障诊断的仪表测量检查有( )。
【简答题】投梭的工艺参数主要有投梭()、投梭()和制梭力。
【简答题】撰写关于“舒耳郎”“采耳”相关介绍的中英文解说词。 舒耳郎.mp4