荧光信号由被检细胞上标记的特异性荧光染料受
A. 荧光激发后产生
B. 红外光激发产生
C. 紫外光激发产生
D. 发光物质激发产生
E. 激光激发产生
目前使用最广泛的荧光色素为
A. FITC
B. RB200
C. TRITC
D. R-RE
Eu3+
Guess the meanings of the words and phrases from Reading One by matching each word in the first group with the word or phrase in the second group that is similar in meaning.
根据交易主体,跨境电商的模式不包括?
A. B2B
B2C
C. B2D
D. C2C