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【简答题】
木材防腐有哪些种类?请列举
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皮皮学刷刷变学霸
举一反三
【简答题】“诺贝尔奖”的日语假名是( )
【简答题】食品分析过程成功与否的决定因素有哪些?
【简答题】There are three kinds of auction: mark-up auction, ______ sealed bids or closed bids.
【单选题】Invitation for bids can be divided into ______.
A.
open bids and unlimited bids
B.
selected bids and limited bids
C.
open bids and selected bids
D.
national bids and international bids
【单选题】Certain drugs can intercalate between DNA bases and alter the backbone of the DNA. The backbone of a DNA strand is composed of which of thefollowing? Choose the one best answer.
A.
Phosphates and sugars
B.
Bases and phosphates
C.
Nucleotides and sugars
D.
Phosphates and nucleosides
E.
Sugars and bases
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