安全生产事故灾难类Ⅲ级的对应颜色是（）A、黄色 B、蓝色 C、红色 D、橙色 发布时间：2017-06-26 13:26 │ 来源：www.tikuol.com 题型：单项选择题 问题： 安全生产事故灾难类Ⅲ级的对应颜色是（）A、黄色B、蓝色C、红色D、橙色
题型：单项选择题 读下面一段话，将合适的词的序号填入括号内。 I 1 a girl. My name is Ann. I get up at 6 in the morning. I usually go to school 2 Monday to Friday. I like playing the piano. Now I 3 the piano in my room. What's my mother doing ? Oh, she 4 dinner in the kitchen. What about my father ? He 5 something in the study. I have a happy family.( ) 1. A. is ( ) 2. A. from ( ) 3. A. am playing ( ) 4. A. cooks ( ) 5. A. writes B. am B. to B. play B. cook B. is writing C. are C. for C. playing C. is cooking C. write 查看答案
题型：单项选择题 第(35)—(36)题基于“学生—选课—课程”数据库中的三个关系： S(S#,SNAME,SEX,AGE),SC(S#,C#,GRADE),C(C#,CNAME,TEACHER)它们的主键用下划线标出。定义一个反映学生姓名及他的平均成绩的视图将使用关系A．S和CB．SC和CC．S和SCD．S、SC和C 查看答案