It is very important for a manager to keep employees ______ of what's going on in the business, both internally and externally.
A. (A) informing
B. (B) to inform
C. (C) informed
D. (D) informs
检索选修四门以上课程的学生总成绩(不统计不及格的课程) ，并要求按总成绩的降序排列出来。正确的SELECT语句是______。
A. SELECT S#，SUM(GRADE) FROM SC
B. WHERE GRADE>=60
CROUP BY S#
D. ORDER BY 2 DESC
E. HAVING COUNT(*) >=4
F. SELECT S#，SUM(GRADE) FROM SC
G. WHERE GRADE>=60
H. GROUP BY S#
I. HAVING COUNT(*) >=4
J. ORDER BY 2 DESC
K. SELECT S#，SUM(GRADE) FROM SC
L. WHERE GRADE>=60
M. HAVINC COUNT(*) >=4
N. GROUP BY S#
ORDER BY 2 DESC
P. DELECT S#，SUM(GRADE) FROM SC
Q. WHERE GRADE>=60
R. ORDER BY 2 DESC
S. CROUP BY S#
T. HAVINC COUNT(*) >=4
Not until you promise not to be tardy again ______ consider transferring you to the newly established branch office.
A. (A) I will
B. (B) will l
C. (C) I am
D. (D) am I
计算机的声音输出设备
A. 系统总线
B. 控制器
C. 运算器
D. 声卡
E. 调制解调器
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