【简答题】配电网中性点接地方式有以下两大类:1中性点____系统。2中性点____系统。
【单选题】如果要删除Student数据库中的Information表,则可以使用命令:( )。
A.
DELETE TABLE information
B.
TRUNCATE TABLE information
C.
DROP TABLE information
D.
ALTER TABLE information
【单选题】如果要删除Student数据库中的Information表,可以使用下列哪个命令?一——
A.
ALTER TABLE Information
B.
TRUNCATE TABLE Information
C.
DROP。TABLE Information
D.
DELETE TABLE Information
【单选题】听力原文:M: Do yon think Alien took your earrings? W: Yes, but I think it was a mistake. She'd never have taken them on purpose. She's just absentminded. Q: What does the woman think of Allen? (13)
A.
She thinks Allen is a thief.
B.
She thinks Allen is clever.
C.
She thinks Allen took her earrings by mistake.
D.
She thinks Allen is a suspect.
【单选题】如果要删除 Student 数据库中的information表,则可以使用命令( )。
A.
DELETE TABLE information
B.
TRUNCATE TABLE information
C.
DROP TABLE information
D.
ALTER TABLE information
【单选题】如果要删除Student数据库中的Information表,则可以使用命令
A.
DELETE TABLE information
B.
TRUNCATE TABLE information
C.
DROP TABLE information
D.
ALTER TABLE informatio