A:吸气使肺泡收缩,肺内气压减小
B:吸气使肺泡扩张,肺内气压减小
C:呼气使肺泡扩张,肺内气压增大
D:呼气使肺泡扩张,肺内气压减小
若x<2,化简x-22+|4﹣x|的正确结果是( )
写出化学符号或化学符号所表示的意义:
— I can't agree more ______ there is a heavy rain or other bad weather.