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单项选择题

关于汽车库、修车库的疏散楼梯间的设置，下列哪一项不属于规范的规定？ ( )

A.高度超过32m的高层汽车库设防烟楼梯间
B.高度超过24m，小于32m高层汽车库设防烟楼梯间
C.高度不超过24m多层汽车库设封闭楼梯间
D.室内地面与室外出入口地坪的高差大于10m地下汽车库设防烟楼梯间
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　Some villagers were going to celebrate an important wine festival（酒宴）in a few days' time, so they borrowed a huge barrel from the nearest town, put it in the village square; and decided that each of them should empty a bottle of the best wine he had into it, so that there should be plenty at the feast（宴会）.
One of the villagers thought he would be very clever. "If I pour a bottle of water in, instead of wine, no one will notice it," he said to himself, " because there will be so much excellent wine in the barrel that the water will be lost in it. "
The night of the feast arrived. Everybody gathered in the village square with their bowls and their glasses for the wine. The tap（塞子）on the barrel was opened, but what came out was pure water. Everyone in the village had the same idea．
What does the underlined sentence" the water will be lost in it" mean?（　　）
A.Thewaterwouldflowthroughthebarrelintotheground
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