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【判断题】
消费者购买商品或者服务，依照国家有关规定或者商业惯例向经营者索要购货凭证或者单据的，经营者必须出具。()A.
正确
B.
错误
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举一反三
【简答题】In GNP and GDP, G stands for ______. A) gross B) grand C) great D)greedy
【单选题】Which of the following is incorrect in this greedy process?
A.
update all nodes with the cost of all links everytime
B.
always pick the node with the smallest estimated distance
C.
always pick the link with the smallest cost
D.
none of the options given
【单选题】I won’t go there again. They are too greedy——they me 15 pounds for the broken cup.
A.
charged
B.
paid
C.
offered
D.
cost
【单选题】The access part of ADA is extremely complicated, so ______.
A.
those greedy attorneys take its advantage to make profit
B.
it has effectively guaranteed the rights of those handicapped
C.
there are inevitably some flaws
D.
the handicapped show no interests in it at all
【单选题】设x 1 ，x 2 ，x 3 ，x 4 ，x 5 这五个数的平均数是a，则x 1 -1，x 2 -1，x 3 -1，x 4 -1，x 5 -1的平均数是（ ）
A.
a-1
B.
a-5
C.
a-1 5
D.
a+1
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