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【单选题】
系统验收后首次故障时间应大于()A.
3个月
B.
4个月
C.
5个月
D.
6个月
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反馈参考答案：
举一反三
【单选题】He_____________ his homework at school. [ ]
A.
isn't do
B.
doesn't does
C.
don't do
D.
doesn't do
【简答题】下列各项中， 会引起企业成本费用增加的项目是( )A. 经营费用B. 管理费用C. 财务费用D. 预算费用
【单选题】要打开一个三位数组成的密码锁,可以从000、001、002逐一尝试直到998、999,总会打开密码锁,这种解决问题的策略是_____
A.
推理式
B.
算法式
C.
手段-目标分析
D.
试误法
【简答题】_______研究是着重运用描述性分析来试图理解某种现象或问题的性质或意义的研究。
【单选题】There are two _____ students in my school. But our school _____ library. [ ]
A.
hundreds, doesn't have a
B.
hundred, doesn't have a
C.
hundreds of, doesn't have any
D.
hundred, doesn't have any
【单选题】She ____ to school on Saturdays and Sundays. [ ]
A.
go
B.
not go
C.
doesn't goes
D.
doesn't go
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