NAVLE（北美执业兽医考题）Day 398

单选题，正确答案是100分，非正确答案为0分，Good Luck！

What is the amount of expected moisture on a paper testing strip when performing Schirmer's tear test in a normal animal?

正常动物进行STT泪液分泌检查时试纸条上的润湿长度是多少？