DII数据库中,检索茶多酚(tea polyphenols)的提取(extraction)工艺,以下检索结果最多的是:
A.在标题字段中输入检索式:(tea polyphenols and extraction)
B.在主题字段中输入检索式:(tea polyphenols and extraction)
C.在标题字段中输入检索式:(tea polyphenol* and extract*)
D.在主题字段中输入检索式:(tea polyphenol* and extract*)
A.在标题字段中输入检索式:(tea polyphenols and extraction)
B.在主题字段中输入检索式:(tea polyphenols and extraction)
C.在标题字段中输入检索式:(tea polyphenol* and extract*)
D.在主题字段中输入检索式:(tea polyphenol* and extract*)
第1题
A.在标题字段中输入检索式:(tea polyphenols and extraction)
B.在主题字段中输入检索式:(tea polyphenols and extraction)
C.在标题字段中输入检索式:(tea polyphenol* and extract*)
D.在主题字段中输入检索式:(tea polyphenol* and extract*)
第2题
A.title: transgen and food
B.title or abstract: transgene and food
C.title or abstract:transgen* and food*
D.title or abstract: transgen* and (food* or corn or soybean)
第3题
A.title: transgen and food
B.title or abstract: transgene and food
C.title or abstract: transgen* and food*
D.title or abstract: transgen* and (food* or corn or soybean)
第4题
A.title: transgen and food
B.title or abstract: transgene and food
C.title or abstract:transgen* and food*
D.title or abstract: transgen* and (food* or corn or soybean)
第6题
A.专业检索的检索式中不能出现and、or、not
B.高级检索中不能输入*、+、-算符
C.所有的文献都有全文可以下载
D.可在检索结果中进一步检索
第7题
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