在电子商务网站中,用于查找用户和商业伙伴等资源地址的搜索工具称为( )
A.搜索引擎
B.个性化信息服务
C.目录服务
D.邮件和消息服务
参考答案:C
In my opinion, your composition is not as interesting as his but yours is ________ in writing.
A.the best organized
B.better organized
C.so organized as
D.as organized as
进一步确诊,哪项检查更有诊断价值
A.静脉肾盂造影(1V
B.中段尿培养、计数加药物敏感试验
C.逆行造影
D.肾CT
E.尿钙/尿肌酐比值及24小时尿钙定量