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【多选题】
抑制干扰的措施（）。A.
屏蔽
B.
隔离
C.
滤波
D.
接地
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反馈参考答案：
举一反三
【单选题】I don't think she can sing this song so well, ____ ?
A.
can she
B.
can't she
C.
do you
D.
don't you
【单选题】将下列化合物按 SN1 历程反应的活性由大到小排列正确的是 ( ) a . (CH3)2CHBr b . (CH3)3CI c . (CH3)3CBr
A.
a > c > b
B.
c > b > a
C.
b > a > c
D.
b > c > a
【单选题】I don’t think she can sing the song well, ?
A.
can she
B.
can’t she
C.
do you
D.
don’t you
【简答题】将下列化合物按 SN 1 历程反应的活性由大到小排列 a.(CH 3 ) 2 CHBrb.(CH 3 ) 3 CIc.(CH 3 ) 3 CBr
【单选题】6 将下列化合物按 SN 1 历程反应的活性由大到小排列 a.(CH 3 ) 2 CHBrb.(CH 3 ) 3 CIc.(CH 3 ) 3 CBr
A.
b>c>a
B.
b>a>c
C.
a>c>b
D.
a> b>c
【简答题】“I don’t think I can do this any more.” “Yes, you can. You only have five more radiation treatments to go. ” I held my wife Becky close. Ever since the breast cancer diagnosis (诊断), she had tried hard...
【单选题】将下列化合物按 SN 1 历程反应的活性由大到小排列 a.(CH 3 ) 2 CHBr b.(CH 3 ) 3 CI c.(CH 3 ) 3 CBr
A.
a>b>c
B.
a>c>b
C.
c>b>a
D.
b>c>a
【单选题】I don’t think she can sing the song well,_____?
A.
can she
B.
can’t she
C.
do you
D.
don’t she
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