根据下面内容，回答26-27题&nBsp;
A．粉尘粒径<201xm&nBsp;
B．粉尘粒径<151μm&nBsp;
C．粉尘粒径<10μm&nBsp;
D．粉尘粒径<51μm&nBsp;
E．粉尘粒径<11μm&nBsp;
26[单选题] 可吸入尘指&nBsp;
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A B C D E
27[单选题]&nBsp;
呼吸性粉尘指&nBsp;
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A B C D E