临床急需70%乙醇400ml,问需取95%乙醇的体积是()
2023-05-21
A:280ml
B:285ml
C:290ml
D:295ml
E:300ml
参考答案:D
B:285ml
C:290ml
D:295ml
E:300ml
参考答案:D
计算公式为400*70%/95%=294.7ml
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