在教师表中统计职称为教授的人数。请对下面的SELECT语句填空: SELECT 【8】 FROM 教师表 WHERE 职称="教授\
参考答案:COUNT(*)
多肽链中主链骨架的组成是()
A.-NCCNNCCNNCCN-
B.-CONHCONHCONH
C.-CHNOCHNOCHNO-
D.-CNOHCNOHCNOH-
E.-CNHOCNHOCNHO-
hours do you sleep every right? [ ]
A. How often
B. How many
C. How much
D. How long