题目

What happened in the next 30 seconds was one of ______ events of the story. A . fantastic B . flexible C . fan D . figure 答案：A临床上给病人输液时通常使用生理盐水是为了A．维持机体温度的稳态 B．维持机体pH的稳态C．维持机体渗透压的稳态 D．提供营养