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【单选题】
重度有机磷中毒的主要指征是A.
血胆碱酯酶活性70％～50％
B.
血胆碱酯酶活性50％～30％
C.
血胆碱酯酶活性60％～35％
D.
血胆碱酯酶活性<35％< /div>
E.
血胆碱酯酶活性<30％< /div>
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举一反三
【单选题】Whitman’s poems are characterized by all the following features except .
A.
a simple and conversational language
B.
a strict poetic form
C.
a free and natural rhythmic pattern
D.
an easy flow of feelings
【单选题】Whitman’s poems are characterized by all the following features EXCEPT ______.
A.
the easy flow of feelings
B.
the free and natural rhythm
C.
the simple and conversational language
D.
the strict poetic form
【单选题】Whitman’s poems are characterized by all the following features EXCEPT______.
A.
a strict poetic form
B.
a simple and conversational language
C.
a free and natural rhythmic pattern
D.
an easy flow of feelings
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