【简答题】热力管道安装中,水平管道变径时应采用( )连接。
【多选题】水平热力管道变径应采用偏心异径管连接,当输送介质分别为蒸汽和热水时,应______。
【单选题】What did Alexander and Diogenes have in common?
【多选题】遗弃、逃逸的动物在遗弃、逃逸期间造成他人损害的,可由( )承担侵权责任。
【单选题】What did Alexander Graham Bell say when he answered the telephone for the first time? [ ]