【简答题】【消耗次数：1】
Directions: Fill in the blanks with the words given below. Change the form if necessary.[fee; react; expand; besides; quantity; stay; highly; device; customer; commercial]5. Popular television plays are often interrupted by[填空1].
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随机题目
【单选题】
下列对于CO<sub>2</sub> 在血液中运输的叙述，错误的是（）
①
CO<sub>2</sub> 在血浆中与水结合形成碳酸
②
在血浆中溶解的CO<sub>2</sub> 绝大部分扩散入红细胞内
③
在红细胞内，在碳酸酐酶催化下，CO<sub>2</sub> 与水反应生成碳酸
④
碳酸可解离为碳酸氢根和氢离子
⑤
氨基甲酸血红蛋白是CO<sub>2</sub> 结合运输的一种形式
【单选题】
下列两个数据之间的关系可在氧解离曲线反映的是（）
①
血氧含量与大气O<sub>2</sub>含量；
②
血氧容量与大气PO<sub>2</sub>；
③
血氧含量与血氧容量；
④
血氧饱和度与血PO<sub>2</sub>；
⑤
血红蛋白与氧的亲合力
【单选题】
下列关于血红蛋白（Hb）与O<sub>2</sub> 结合特征的叙述，正确的是（）
①
Hb与O<sub>2</sub> 的结合是可逆的氧化作用
②
血液[H<sup>+</sup> ]升高时，Hb与O<sub>2</sub> 的亲和力增强
③
氧离曲线右移，表示Hb与O<sub>2</sub> 的亲和力增强
④
CO与Hb的亲和力是O<sub>2</sub> 的210倍
⑤
Hb浓度低下时，氧合血红蛋白减少，血液呈紫蓝色
【单选题】
下列关于O<sub>2</sub> 在血液中运输的叙述，错误的是（）
①
以结合的形式运输占98%
②
O<sub>2</sub> 的结合形式是氧合血红蛋白
③
O<sub>2</sub> 与血红蛋白结合或解离取决于氧分压的高低
④
氧合血红蛋白呈鲜红色
⑤
血红蛋白浓度低下的患者易出现紫绀
【单选题】
切断动物的双侧颈迷走神经，呼吸会发生变化的是（）
①
呼吸频率加快
②
吸气时间延长，呼吸频率减慢
③
吸气时间变短，呼气时间延长
④
吸气和呼气时间均变短
⑤
呼吸频率不变
【单选题】
中枢化学感受器最敏感的刺激物是（）
①
血液中的CO<sub>2</sub>；
②
脑脊液中的CO<sub>2</sub>；
③
血液中的H<sup>+</sup>；
④
脑脊液中的H<sup>+</sup>；
⑤
血液中的O<sub>2</sub>
【单选题】
生理情况下，血液中调节呼吸最重要的物质是（）
①
O<sub>2</sub>；
②
CO<sub>2</sub>；
③
H<sup>+</sup>；
④
N<sub>2</sub>；
⑤
NaHCO<sub>3</sub>