护士准备配制皮肤消毒用的苯扎溴铵溶液。现有5%苯扎溴铵10ml,欲加蒸馏水的容量是
2023-06-25
A.150ml
B.250ml
C.360ml
D.490ml
E.550ml
参考答案:D
B.250ml
C.360ml
D.490ml
E.550ml
参考答案:D
苯扎溴铵消毒皮肤的浓度是0.1%,现有5%苯扎溴铵10ml,应加蒸馏水的容量是:5%×10÷0.1%-10=490ml。
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