Which grade were they in? A: Grade 8 B: Grade 9 C: Grade 10 D: Grade 11

‌在“学生-课程”数据库中，当定义SC表时对字段Grade进行约束：Grade SMALLINT CHECK (Grade>=0 AND Grade<=100)，如果SC表中原有记录('201215121','7',92)，那么当执行"UPDATE SC SET Grade=Grade+10"时，数据库和DBMS将___________。‍ A: SC表数据不变，DBMS报错不允许更新 B: 记录('201215121','7',92)更新为('201215121','7',100)，DBMS提醒Grade值不能超过100 C: 记录('201215121','7',92)更新为('201215121','7',NULL)，DBMS提醒Grade值不能超过100 D: SC表数据不变，DBMS显示语句语法正确

（4分） public class Hello9 { public static void main(String args&#91;&#93;) {int 分数=75; String grade; switch(分数/10) { case 10 : case 9: grade="优"; break; case 8: grade="良"; break; case 7: grade="中"; break; case 6: grade="及"; break; default: grade="差"; } System.out.println("成绩等级："+grade); }}程序的输出结果为：

The most common division between primary and secondary education in the US is ___________.（ ） A: primary schools (Grade 1 to Grade 6) and middle schools (Grade 7 to Grade 12) B: elementary schools (Grade Kindergarten to Grade 8) and high schools (Grade 9 to Grade 12) C: elementary schools (Grade Kindergarten to Grade 3), middle schools (Grade 4 to Grade 6) and high schools (Grade 7 to Grade 12) D: grammar schools (Grade Kindergarten to Grade 6) and high schools (Grade 7 to Grade 12)

【单选题】5. 假定student表中有字段grade,grade代表分数,依次统计grade字段的最大值,最小值,平均值的SQL语句是 A. SELECT max(grade),min(grade),average(grade) FROM student; B. SELECT max(grade),min(grade),avg(grade) FROM student; C. SELECT min(grade),average(grade),max(grade) FROM student; D. SELECT min(grade),avg(grade),max(grade) FROM student;

What grade is the woman in A: Grade one. B: Grade two. C: Grade three.

They are the students of ______. A: grade 7 B: Grade 7 C: 7th grade D: Grade 7th

有代码为： grade = int(input())[br][/br] grade = grade // 10[br][/br] if grade == 9 and grade == 10:[br][/br] print('优秀')[br][/br] elif grade == 8:[br][/br] print('良')[br][/br] elif grade == 7:[br][/br] print('中')[br][/br] elif grade == 6:[br][/br] print('及格')[br][/br] elif grade > 0 and grade &#91; 6:<br&#93; print('不及格')[br][/br] else:[br][/br] print('错误的成绩输入')[br][/br] 请问以下说法，哪些 正确 ？ A: 判断是否优秀的条件有错误 B: 如果输入90分到100分之间的分值，输出为“优秀” C: 不及格的输入条件有错误 D: 如果输入0，输出为“错误的成绩输入”

下面这段程序，计算5个成绩的最大值（ ） maxGrade = grade&#91;0&#93;; for(int i=0; i&#91;10; i++){ if(maxGrade &#93; grade[i]){ maxGrade = grade[i]; } }[/i][/i]

Fill in the blanks with the following expressions. We are offering 10 000 metric tons of first grade rice for ________ shipment.