题目内容
(请给出正确答案)
[单选题]
()KN95防护口罩的N代表的意思是
A.Not resistant to oil
B.Resistant to oil
C.Oil Proof
D.NaCL
答案
A、Not resistant to oil
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A.Not resistant to oil
B.Resistant to oil
C.Oil Proof
D.NaCL
A、Not resistant to oil