某绝热系统在接受了环境所做的功之后，其温度
A、 一定升高
B、 一定降低
C、 一定不变
D、 可增、或可减、或不变

单项选择题A register’s functions include( )

单项选择题What meaning is referred to if we say the meaning “a dog” is an animalwith four legs and a tail, often kept as a pet or trained for work? A、Denotative meaning B、Connotative meaning C、Extended meaning D、Inspired meaning