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【单选题】
在 H.248协议中,表示短定时器的字母是( )。A.
S
B.
T
C.
L
D.
W
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反馈参考答案：
举一反三
【单选题】How many bases and stems are there in the lexeme recapitalized?
A.
3 bases and 1 stem.
B.
2 bases and 1 stem.
C.
3 bases and 2 stems.
D.
2 bases and 2 stems.
【判断题】Compounding is the process of creating new words by combining affixes and bases.()
A.
正确
B.
错误
【单选题】She always ____ her opinion ____ facts.
A.
depends, on
B.
bases, on
C.
put, into
D.
bases, by
【简答题】A．ends B．backgrounds C．origins D．bases
【简答题】A．points B．stations C．establishments D．bases
【单选题】Which of the following statements about minor bases is wrong?
A.
In DNA, the most common minor bases are acetylated forms of the major bases.
B.
In some viral DNAs, certain bases may be hydroxymethylated or glucosylated.
C.
Altered or unusual bases in DNA molecules often have roles in regulating or protecting the genetic information.
D.
Minor bases of many types are also found in RNAs, especially in tRNAs.
【单选题】Penicillin is not stable in all of the following bases EXCEPT ()
A.
anhydrous bases
B.
water-soluble bases
C.
sodium alginate
D.
emulsion base
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