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【单选题】
下列算法中,某一趟排序结束后未必能选出一个元素放在其最终位置上的是( )。A.
直接插入排序
B.
堆排序
C.
快速排序
D.
冒泡排序
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反馈参考答案：
举一反三
【单选题】将进货单价为40元的商品按50元售出时，就能卖出500个，已知这个商品每个涨价1元，其销售量就减少10个．当定价为（ ）元时，可获得最大利润．
A.
85元
B.
70元
C.
105元
D.
115元
【简答题】将进货单价为40元的商品按50元售出时，能卖出500个，已知这种商品每涨价0.1元时，其销量就减少1个，问：为了赚得9000元的利润，售价应定为多少？这时应进货多少个？
【单选题】Pasion, a slave worked for two leading Athenian bands, later opened a bank of his own.
A.
Y
B.
N
C.
NG
【简答题】将进货单价为40元的商品按50元售出时，就能卖出500个．已知这种商品每个涨价1元，其销售量就减少10个．为了赚得8000元的利润，每个商品售价应定为多少元？这时应进货多少个？
【单选题】How long will it take the man to get the bank card?
A.
Two weeks after he opened the account.
B.
At least one week after he opened the account.
C.
Less than a week after he opened the account.
D.
Immediately after he opened the account.
【单选题】How long will it take you to get the bank card if you have opened an account in a hank?
A.
Two weeks after you opened the account.
B.
At least one week after you opened the account.
C.
Less than a week after you opened the account.
D.
Immediately after you opened die account.
【简答题】将进货单价为40元的商品按50元出售时，能卖出500个．已知这种商品每个涨价1元，其销售量就减少10个，则为了赚得8000元的利润售价应定为______元．
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