【单选题】Which description is correct, and can be found in the text?A: Porous carbon microspheres is microporous material.B: PCMSs is nanomaterials with ~20 nm diameter.C: Surface functional groups can be eval...
A.
Porous carbon microspheres is microporous material.
B.
PCMSs is nanomaterials with ~20 nm diameter.
C.
Surface functional groups can be evaluated by X-ray diffraction spectroscopy
D.
PCMSs is mesoporous material.
【判断题】Watson and Crick did not make use of X-ray diffraction data.
【单选题】由击实试验可以获得( )和( )两个控制黏性土击实特性的指标。
【单选题】在生产实践中,很多观赏植物由于受病毒病影响,植株瘦矮,种球变小,花色不鲜,质量下降, 下列表现中,( )不属于花卉种质退化的表现。
【单选题】下列关于穴位贴敷注意事项的叙述,错误的是
C.
对刺激性强的药物,贴敷穴位不宜过多,面积不宜过大
【单选题】下列表现中,( )不属于花卉种质退化的表现。
【判断题】Watson and Crick did not make use of X-ray diffraction data.
【单选题】The phase constitutions _________ these ashes were investigated using X-ray diffraction.
【单选题】Who conducted the X-ray diffraction studies of DNA?
B.
Miescher and McClintoc