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
跨境电商与国内电子商务的区别不包括?
A. 业务环节差异
B. 交易主体差异
C. 交易风险差异
D. 支付方式差异
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