试题详情

甲醛常作为尿液的防腐剂,一般每升尿中加入

A10%甲醛溶液5~10ml

B20%甲醛溶液10~15ml

C30%甲醛溶液5~10ml

D40%甲醛溶液5~10ml

E50%甲醛溶液5~10ml