战略数据规划方法产品、服务及资源的生命周期划分为有序的四个阶段,其第一个阶段应该是
A.获得
B.计划
C.管理
D.终结
参考答案:B
.He simply repeated this year's work. He's the sort of boy who _____ to anyone whatever failures he'a had in whatever he does.
A.doesn't mention
B.hadn't mentioned
C.didn't mention
D.hasn't mentioned
TY-220型推煤机发动机的两个柴油滤清器是()联形式。
A.串
B.并
C.混