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【单选题】
化合物2-甲基丙酸分子中,烃基为 ( )
A.
甲基
B.
乙基
C.
丙基
D.
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参考答案:
举一反三
【单选题】I don't care about my hair.
A.
I DON'T care aBOUT MY hair.
B.
I don't CARE about my HAIR.
【单选题】下列哪一项属于胆碱能受体()
A.
M,α受体
B.
M,β受体
C.
M, α1和β1受体
D.
M受体,N1和N2受体
【单选题】下列哪一项属于胆碱能受体( )。
A.
M, a
B.
a 和β
C.
M,a 1 和β 2
D.
M, N 1 和N 2
【判断题】一品红繁殖方法有扦插繁殖,嫁接繁殖和组培繁殖。( )
A.
正确
B.
错误
【单选题】in '....and all my knowledge him was limited to occasional meetings about the house,…”.the word about means____________
A.
around
B.
on
C.
outside
D.
concerning.
【单选题】In '… and all my knowledge of him was limited to occasional meetings about the house,'(the second paragraph), the word about means ______.
A.
around.
B.
on.
C.
outside.
D.
concerning.
【单选题】下列哪一项属于胆碱能受体
A.
M、α
B.
M、β
C.
M、N1、N2
D.
α、β1、β2
【单选题】下列哪一项属于胆碱能受体
A.
、M,α受体
B.
M,β受体
C.
M, α 1 和β 1 受体
D.
M受体,N 1 和N 2 受体
【单选题】In '.... and all my knowledge of him was limited to occasional meetings about the house... ' the word about means ______.
A.
around
B.
on
C.
outside
D.
concerning
【单选题】下列哪一项属于胆碱能受体
A.
M、α
B.
M、β
C.
M、α、β
D.
M、N 1 和N 2
E.
M、β 1 、β 2 、β 3
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