单项选择题
朝九晚五;常日班
问答题朝九晚五;常日班
The book ___ I read last night was fantastic. ...
单项选择题The book ___ I read last night was fantastic. A. won't be seen B. wasn't seen C. hasn't been seen D. hadn't been seen
材料的失效模式只与材料本身有关,而与应力状态无关。正确错误
判断题材料的失效模式只与材料本身有关,而与应力状态无关。 正确 错误