名校
1 . 我国某科研机构新研制了一种治疗支原体肺炎的注射性新药,并已进入二期临床试验阶段.已知这种新药在注射停止后的血药含量
(单位:
)随着时间
(单位:
)的变化用指数模型
描述,假定该药物的消除速率常数
(单位:
),刚注射这种新药后的初始血药含量
,且这种新药在病人体内的血药含量不低于
时才会对支原体肺炎起疗效,现给某支原体肺炎患者注射了这种新药,则该新药对病人有疗效的时长大约为( )(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0942066c6c64ba77d65d7d44e08541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd47838a087313bae9c15e075fd3c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933311c0c090e1138e4dd388b7adf8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc3f9c011f9711838bfd8e6129ee54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ec919850ca51e1471314c3bc8d10fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7246a55845d15ad6bc3c659d653d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b19550a1d6b2a10f6f46f39b2513ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fa7a0b6f0cd2da2acac0a9c1dae244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5b06880a46db565970178d31a1de29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08b4814378e880c4f51604fe48051f1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-24更新
|
198次组卷
|
2卷引用:四川省南充市2023-2024学年高一上学期期末学业质量监测数学试题