变形杆菌感染()
A.脓液稠厚,黄色,不臭
B.脓液稠厚,有粪臭
C.脓液有特殊的恶臭
D.脓液稀薄,淡红色,量多
E.脓液淡绿色,有特殊的甜腥臭
参考答案:C
Which one of the following was used to determine the structure of the DNA molecule ( )
A.Transmission(透射) electron microscope
B.Scanning electron microscope
C.Differential centrifugatioin(差速离心)
D.X-ray crystallography
什么是形象营销策略?