函数 STR（）的返回值为 _________

答案：["" 314";314"]

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正常心脏相对浊音界的范围,心左界第二肋间____~____cm,第三肋间____~____cm,第四肋间____~____cm,第五肋间____~____cm,左锁骨中线至前正中线距离____~____cm;心右界第二肋间____~____cm,第三肋间____~____cm,第四肋间____~____cm
答案：["2","3","3．5","4．5","5","6","7","9","8","10","2","3","2","3...