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【判断题】
系统约束中最多含有一个正或负的偏差变量。A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is Bob going to do this weekend?
A.
To see a film.
B.
To watch TV.
C.
To stay at home doing some washing.
【单选题】听力原文：What is Bob going to pay for? (7)
A.
His ticker only.
B.
Their vacation.
C.
His supper only.
D.
Their supper.
【简答题】( )是一组有固定数目和相同类型成分分量的有序集合。
【单选题】（）the Manager’s not available at the moment. But the Assistant Manager is here.How Can I help you, madam?
A.
I’m afraid
B.
With our compliments
C.
To talk to the Manager
D.
It is entirely our fault
【单选题】I don't really work here. I ____ out until the manager comes back. [ ]
A.
just help
B.
has just helped
C.
am just helping
D.
will help
【简答题】铁路旅客运输合同的基本凭证是
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