【单选题】Based on whether the goods are loaded or not, the B/L can be classified into ___ .
A.
clean B/L and unclean B/L
B.
direct B/L and transshipment B/L
C.
straight B/L and order B/L
D.
on board B/L and received B/L
【判断题】在bookshop数据库中有5 个表,这五个表的结构描述见“实验数据库描述”。其中员工表employee(emp_no,emp_name,sex,dept,title,date_hired,birthday,salary,telephone,addr),客户表customer(cust_name,receiver,tel_no,cust_Addr),图书表books(book_no,book_na...
【单选题】关于SQL 语句:SELECT 班级,AVG(语文) AS 语文平均分 FROM 年级成绩 GROUP BY 班级 HAVING AVG(语文)>85 说法正确的是 。
A.
执行该条SQL 语句,将会在“年级成绩”表中新加一个“语文平均分”字段
B.
该语句中去掉“GROUP BY 班级 HAVING AVG(语文)>85”部分,照样可以正确执行
C.
因为使用了聚集函数,所以执行该条 SQL 语句的结果只有一条记录
D.
如果“年级成绩”数据表中“班级”字段只有 5 个值,那么该条SQL 语句的查询结果小于等于5 条记 录
【判断题】在bookshop数据库中有5 个表,这五个表的结构描述见“实验数据库描述”。其中员工表employee(emp_no,emp_name,sex,dept,title,date_hired,birthday,salary,telephone,addr),客户表customer(cust_name,receiver,tel_no,cust_Addr),图书表books(book_no,book_na...
【判断题】As far as no teacher intervention in CLT, the assessment should be based on whether the students have achieved their communicative purpose, not whether the language they used was correct.