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[单选题]
在60MHz仪器中,某质子的化学位移为1.0,其共振频率与TMS相差( )Hz。
A.100
B.50
C.1
D.60
查看答案
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A.100
B.50
C.1
D.60
下列化合物中带标志质子的化学位移归属正确的应为()。
A.δa在1.5~2.0ppm,δb和δc在1.8~3ppm,δd在9~10ppm
B.δa在1.5~2.0ppm,δb和δc在5.5~7.5ppm,δd在10~15ppm
C.δa在0~1ppm,δb和δc在5.5~7.5ppm,δd在9~10ppm
D.δa在1.5~2.0ppm,δb和δc在5.5~7.5ppm,δd在9~10ppm
A.420Hz
B.1400Hz
C.700Hz
D.60Hz