关于确定空调房间的换气次数，说法错误的是( )。 A．舒适性空_爱下问搜题

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问题单项选择题

关于确定空调房间的换气次数，说法错误的是( )。

A．舒适性空气调节，每小时不宜小于5次
B．舒适性空气调节，每小时不宜小于10次
C．高大房间应按其冷负荷通过计算确定
D．工艺性空气调节，按室温允许波动范围确定

答案

参考答案：B

选择题

It takes Jill 10 minutes________ to school every morning.

A．walk

B．walking

C．to walk

D．walks

选择题

I can guess you were in a hurry. You ______ your sweater inside out.

A. had worn
B. wore
C. were wearing
D. are wearing