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【单选题】
查询SC表中课程号为'10010001'的学号、成绩、调整成绩(调整成绩=原成绩开平方后再乘以10)。A.
UPDATE sc SET cj=SQRT(cj)*10； SELECT sno AS 学号, cno AS 课程号, cj AS 调整成绩 FROM sc WHERE cno='10010001';
B.
SELECT sno AS 学号, cno AS 课程号, cj AS 原成绩, SQRT(cj)*10 AS 调整成绩 FROM sc WHERE cno='10010001';
C.
UPDATE sc SET cj=SQRT(cj)*10； SELECT sno AS 学号, cno AS 课程号, cj AS 原成绩, SQRT(cj)*10 AS 调整成绩 FROM sc WHERE cno='10010001';
D.
SELECT sno AS 学号, cno AS 课程号, cj AS 原成绩, SQRT(cj)*10 AS 调整成绩 FROM sc HAVING cno='10010001';
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反馈参考答案：
举一反三
【单选题】【单选】Ocean charts are ______ones.
A.
small scale
B.
omitted
C.
large scale
D.
inappropriate
【单选题】Small-scale charts cover large areas of ocean and are also called _______.
A.
natural scale charts
B.
reference charts
C.
coastal charts
D.
harbour charts
参考解析：
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