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【单选题】
定性鉴别最常用,最方便的一种方法是A.
薄层色谱法
B.
气相色谱法
C.
高效液相色谱法
D.
薄层扫描色谱法
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反馈参考答案：
举一反三
【单选题】Which one doesn't mean “第三者”?
A.
the other woman/man
B.
Love rat
C.
mistress
D.
home-wrecker
【单选题】— Look at that animal. It’s interesting. — Which one do you mean? ____ black one with a long tail?
A.
A
B.
An
C.
The
D.
/
【单选题】Which one does not mean “peer”?
A.
a person who is of equal standing with another in a group.
B.
a secret look
C.
a noblemen
D.
look searchingly
【简答题】2 什么是DNA分子的复性?其复性速度的快慢主要受哪些因素影响?
【单选题】— Look at ____ animal. It's interesting. — Which one do you mean? ____ black one with a long tail? [ ]
A.
an, The
B.
an, An
C.
the, The
D.
the, An
【单选题】Which one doesn't mean "remain stable"?
A.
stabilize
B.
level off
C.
undulate
D.
be unchanged
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