下列哪项不会造成服务器不同步（）
A.服务器掉电
B.硬盘故障
C.主板故障
D.下装CB
参考答案：D
—Excuse me,which movie are you waiting for?
—The new Star Wars.We（）here for more than two hours.
A.waited
B.wait
C.would be waiting
D.have been waiting
设则f(x)在x=0点6阶导数f(6)(0)是()。
A.A
B.B
C.C
D.D
则f(x)在x=0点6阶导数f(6)(0)是()。