透明的矿物药是
A.赭石
B.辰砂
C.硫黄
D.礞石
E.云母
参考答案:E
A team member notices the project manager that a quality measurement for the project can not be met. What should the project manager do
A) Notify management.B) Hold a team meeting.C) Look for alternative ways to meet the quality level.D) Ask management tp come up with options.
设有选课表,表中包含的字段有:学号C(3),课程号C(3),成绩N(3)。查询每门课程的学生人数,要求显示课程号和学生人数,对应的SQL语句为: SELECT课程号,【14】AS学生人数FROM选课表; GROUPBY【15】