【单选题】已知有关系“STUDENT”,则关系运算σANE<80(STUDENT)用SQL语句表示为(52)。
A.
SELECT( * )FROM STUDENT WHERE AVE < 80
B.
SELECT( * )FROM STUDENT HAVING AVE < 80
C.
SELECT(AVE)FROM STUDENT WHERE AVE < 80
D.
SELECT(AVE) FROM STUDENT HAVING AVE < 80
【单选题】常见的孔版有誊写版、镂孔版、喷花版和()等。
【单选题】It's _______ fine weather. Why _______ out for a walk? The air is nice and clean outside. [ ]
【单选题】It's fine weather. We decide to go out for a walk.
【单选题】听力原文:W: How's your dinner, sir? M: It's just fine. W: Can I bring you any thing? M: No, thanks. Everything's fine. What does the man think of the dinner?
C.
He thinks it's neither bad or fine.