需设置机械排烟设施的建筑中庭，其排风量确定为( )。
A．按其体积的6次/h换气计算
B．按其体积的4次/h换气计算
C．最小排烟量不小于102000m3/h
D．中庭体积小于17000m3时，其排烟量按其体积的6次/h换气计算；中庭体积大于17000m3时，其排烟量按其体积的4次/h换气计算；但最小排烟量不应小于102000m3/h
参考答案：D
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It can run fast(快). Some tigers live in the (1)______. They like to eat meat. They do not eat fruit. They often catch and eat small (2)______, they usually eat six (3)______ of meat a day. Look at that fat animal. It is white and black. It is very cute(惹人喜爱). Its name is panda. The panda has big black eyes, a short tail and a white fat body. It can (4)______ the tree. Some pandas live in (5) ______ grove(林子) and the other pandas live in the zoo. Pandas like bamboo and grass. They usually eat 15 bamboo a day. They often drink water. They only live in China. There're about one (6)______ and six hundred pandas in the (7)_______ in China. So they are very few. We must safeguard(安全保护) them. Let them be our friends. There are lots of (8)_______, they can live in Asia, America, Africa, Australia and (9)________. They eat meat, too. It doesn't like (10)_______. |