气压试验时,介质的温度()15℃(干燥、清洁的空气、氮气、惰性气体)。A、大于 B、 发布时间:2019-09-06 21:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 气压试验时,介质的温度()15℃(干燥、清洁的空气、氮气、惰性气体)。A、大于B、小于C、等于D、任意
题型:单项选择题 Peter _____ be really difficult at times even though he's a nice person in general. [ ]A. shall B. should C. can D. must 查看答案