单项选择题
未知题型 一般压力表适用于测量无爆炸、不结晶、不凝固及对( )不起腐蚀的液体、蒸汽和气体等介质的压力。
单项选择题 听力原文:W: I wonder why some people got up and left in the middle of the movie.M: Maybe they couldn't enjoy it as much as you did.Q: What can you infer from the conversation?(19)A.The movie is boring.B.The movie is interesting.C.The woman likes the movie very much.D.The man doesn't like the movie.
未知题型 一般建筑的热水管网安装采用( )。