常用的内置聚合函数有( ) A: max(col) B: min(col) C: count(*) D: sum(col)
常用的内置聚合函数有( ) A: max(col) B: min(col) C: count(*) D: sum(col)
-itis
-itis
选项col=4或col="blue"代表蓝色。（ ）
选项col=4或col="blue"代表蓝色。（ ）
The word "ileocolitis" can be divided into several basic parts as _________. A: ileo+colitis B: ileo+col+itis C: ileoco+litis D: ileocol+itis
The word "ileocolitis" can be divided into several basic parts as _________. A: ileo+colitis B: ileo+col+itis C: ileoco+litis D: ileocol+itis
Itis()foreveryfamilytomakeearthquakeemergencyplans
Itis()foreveryfamilytomakeearthquakeemergencyplans
Iftheweatherisalittlewindy,itis
Iftheweatherisalittlewindy,itis
Itis (好消息).
Itis (好消息).
Itis()tohavealotofrainhereinJuly.
Itis()tohavealotofrainhereinJuly.
—Itis usefulbook.
—Itis usefulbook.
–Isthis_______pen? A: your;itis B: you;itis C: his;it’s D: her;isn’t
–Isthis_______pen? A: your;itis B: you;itis C: his;it’s D: her;isn’t