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【单选题】
CO 2 的弥散能力是O 2 的多少倍A.
7
B.
10
C.
15
D.
20
E.
25
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A.
Exposed to
B.
Opposed to
C.
Addicted to
D.
Accustomed to
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A.
effect
B.
condition
C.
assumption
D.
ground
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