一定质量的理想气体吸热膨胀，保持压强不变，它的内能增加，那么（      ） 

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='17002' and id < 1430102 and id<>'1430102' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='17002' and id > 1430102 and id<>'1430102' order by id asc limit 5