试题与答案

为验证人体呼出的气体中含有较多的二氧化碳的实验装置,瓶内均装入澄清的石灰水。

题型:读图填空题

题目:

为验证人体呼出的气体中含有较多的二氧化碳的实验装置,瓶内均装入澄清的石灰水。

(1)如果气体的进出均选择弯管,在实验时,应向甲瓶__________,向乙瓶__________。

(2)经向两瓶内分别吹气、吸气后,甲乙两瓶的区别是______________

(3)在本实验中,甲瓶的作用是__________,乙瓶的作用是说明了_______________。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析: 根据《契税暂行条例》的规定,契税的纳税义务人是在我国境内承受土地、房屋权属转移的单位和个人。故此题错误。

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