【单选题】To make sure they stock clothes that their customers will purchase, a department store implements a new application that analyzes spending levels at their stores and cross-references this data to popu...
C.
Operational excellence
D.
Improved decision making
E.
New products and services
【单选题】列出各门课的平均成绩、最高成绩、最低成绩和选课人数。正确的 SQL 语句是 _____ 。
A.
SELECT 课号,AVG(成绩),MAX(成绩),MIN(成绩),COUNT(学号) FROM 选课 GROUP BY 课号;
B.
SELECT 课号,AVG(成绩),MAX(成绩),MIN(成绩),COUNT(学号) FROM 选课 ORDER BY 课号;
C.
SELECT 课号,AVG(成绩),MAX(成绩),MIN(成绩),COUNT(学号) FROM 选课 WHERE 课号;
D.
SELECT 课号,AVG(成绩),MAX(成绩),MIN(成绩),COUNT(学号) FROM 选课 HAVING 课号;
【单选题】She avoided making any references _________ her divorce on any public occasion.
【多选题】下列关于菌种保藏说法正确的是?
A.
菌种保藏是进行微生物学研究和微生物育种工作的重要组成部分
B.
菌种保藏主要是根据菌种的生理生化特点人工创造条件使孢子或菌体的生长代谢活动尽量降低,以减少其变异
C.
干燥和低温使菌种处于“体眠”状态,抑制其繁殖能力
D.
液体石蜡封存保藏法不适用于丝状真菌、酵母菌、芽孢细菌和放线菌的保藏
【单选题】Writing your own ideas on a topic then making up the names of references to put next to them is:
【单选题】如下几个表所示学生、课程、必修课和选课关系。 列出各门课的平均成绩、最高成绩、最低成绩和选课人数。正确的 SQL 语句是 _____ 。
A.
SELECT 课号, AVG( 成绩 ) , MAX( 成绩 ) , MIN( 成绩 ) , COUNT( 学号 ) FROM 选课 GROUP BY 课号;
B.
SELECT 课号, AVG( 成绩 ) , MAX( 成绩 ) , MIN( 成绩 ) , COUNT( 学号 )FROM 选课 ORDER BY 课号;
C.
SELECT 课号, AVG( 成绩 ) , MAX( 成绩 ) , MIN( 成绩 ) , COUNT( 学号 )FROM 选课 WHERE 课号;
D.
SELECT 课号, AVG( 成绩 ) , MAX( 成绩 ) , MIN( 成绩 ) , COUNT( 学号 )FROM 选课 HAVING 课号;
【单选题】To make sure they stock clothes that their customers will purchase, a department store implements a new application that analyzes spending levels at their stores and cross-references this data to popu...
C.
Operational excellence
D.
Improved decision making
E.
New products and services
【单选题】Making some notes from ideas in a source and using them in your text but forgetting to put the references is: