临床急需70%乙醇400ml,问需取95%乙醇的体积是A:280ml B:285ml C:290ml D:295ml E:300ml

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问题 临床急需70%乙醇400ml,问需取95%乙醇的体积是

选项 A:280ml
B:285ml
C:290ml
D:295ml
E:300ml

答案D

解析
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