人在吸气的时候与下列情况相符合的是_刷题宝

题干

人在吸气的时候与下列情况相符合的是（　　）

A：膈肌收缩、膈顶下降、胸腔扩大、气压变小

B：膈肌收缩、膈顶上升、胸腔缩小、气压变大

C：膈肌舒张、膈顶下降、胸腔扩大、气压变小

D：膈肌舒张、膈顶上升、胸腔缩小、气压变大

上一题下一题 0.0难度选择题更新时间:2019-05-11 10:44:40

答案(点此获取答案解析）

A

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根据短文理解，回答下列问题。

Found

I found a bag in our school library the day before yesterday. The bag is red. Besides a wallet with some money, there is a key and a book.

If you lost your bag, please call me soon. My name is Lily and my phone number is 62043340. You can also find me in Room 117. And my e-mail address is lily202@163.com.

Thursday, May 13,2010

Lost

I lost my 2-pound pet cat this morning. His name is Jackson and he is only 5 months old. He got lost on Scarlet Street. His body is white and his head is black. Please let me know if you have ever seen him. My name is Jane and my phone number is 62043856.

Thanks!

Monday, May10, 2010

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已知抛物线y²=2px（p＞0）的准线经过点（﹣1，1），则该抛物线焦点坐标为（）

同类题3

Mathilde and her husband turned the whole room upside down ________ the lost necklace.

同类题4

货车超载运输会严重破坏公路设施，对公路桥梁的安全构成严重威胁．原因是超载时货车对路面的____几乎不变，而____却大大增加，从而造成对路面的压强过大．

同类题5

小宇在“研究滑轮组机械效率”的实验中，用如图甲所示的滑轮组进行了三次实验，实验数据如下表：

实验次数	物重 G/N	物体上升的高度h/cm	测力计的示数F/N	测力计移动的距离s/cm
1	6	3		9
2	6	5	2.5	15
3	6	8	2.5	24

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