碳四塔带水的工艺现象是()
A、塔底温度低
B、回流罐水包有液面突然上升
C、塔顶温度升高
D、塔压升高
参考答案:A, B
在SQL SELECT语句中与INTO TABLE等价的短语是( )。
A.INTO DBF
B.TO TABLE
C.INTO FORM
D.INTO FILE
---Why not take ____ umbrella with the sign “Made in China”? It’s ____ useful one.
--- What ____ good advice.
A.an; an; a
B.an; a; \
C.a; an; a
D.\; an; a