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【单选题】
市场调查直接访问法中不包括()。A.
面谈调查
B.
问卷调查
C.
电话调查
D.
商场观察
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反馈参考答案：
举一反三
【单选题】Thousands of______at the stadium came to their feet to pay tribute to an outstanding performance.
A.
audience
B.
participants
C.
spectators
D.
observers
【单选题】I must say, it’s a very offer. The pay is higher and the working conditions are much better.
A.
attractive
B.
wealthy
C.
valuable
D.
worth
【单选题】（ ）iS a property of object—oriented software by which an abstract operation ma)’be performed in different ways in different classes．
A.
Method
B.
Polymorphism
C.
Inheritance
D.
Encapsulation
【简答题】The [Ag + ] of a solution is 4.0×10 -5 . Calculate the [Cl - ] that must be exceeded before AgCl can precipitate.
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