单项选择题

下列设在高层建筑内变形缝处附近的防火门的位置，哪一条是正确的？( )

A.设在变形缝处附近的防火门，应设在疏散方向的一侧
B.应设在楼层数较多的一侧，且门开启后不应跨越变形缝
C.应设在楼层数较少的一侧，且门开启后不应跨越变形缝
D.应设在楼层数较多的一侧，门开启后可以跨越变形缝
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单项选择题
房间采用自然排烟时，其自然排烟口的设置选用以下哪种位置最好？( )
A.房间内墙的下侧部位
B.房间内墙的上侧部位
C.房间外墙的下侧部位
D.房间外墙的上侧部位
单项选择题
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．One of the villagers poured a bottle of water into the barrel because ____.（ ）
A.hetriedtocheattheothers
B.theothersputwaterintoittoo
C.hethoughthewasclevererthantheothers
D.thewineinthebarrelwastoothick
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