找考题网-背景图
单项选择题

A.10%甲醛溶液5~10mlB.20%甲醛溶液10~15mlC.30%甲醛溶液5~10mlD.40%甲醛溶液……

A1/A2型题甲醛常作为尿液的防腐剂,一般每升尿中加入()

A.10%甲醛溶液5~10ml
B.20%甲醛溶液10~15ml
C.30%甲醛溶液5~10ml
D.40%甲醛溶液5~10ml
E.50%甲醛溶液5~10ml