化学物质出现选择毒性的原因可能在于() A.物种的差异 B.细胞学的差异 C.不同生

题型:多项选择题

问题:

化学物质出现选择毒性的原因可能在于()

A.物种的差异

B.细胞学的差异

C.不同生物或组织器官对化学物质生物转化过程的差异

D.不同组织器官对化学物质亲和力的差异

E.不同组织器官对化学物质所致损害的修复能力的差异

考点:职业卫生(医学高级)职业卫生(医学高级)综合练习职业卫生(医学高级)综合练习题库
题型:多项选择题

阅读理解。

     Li Yan's parents divorced (离婚) when she was only six years old. Two years later, her father got

married again and the stepmother (继母)wasn't kind to her. Her father didn't look after her well. So she

had to live with her grandmother. Sadly, her grandmother died five years ago. Her mother was ut into

prison (监狱) because of killing a person by mistake. What a poor girl! She became very lonely.    

     One day, she came home late. Her father became angry and hit her with a stick. Then he locked her

in the room. She cried and cried. No one came to help her. The next day, she climbed out through the

window while they were away. She ran away from the house. She was free. But where could she go?

She wanted to find a job to make some money,but she was too young. No one would give her the

chance. At night, she had nothing to eat. She was so weak that she fell down on the street.    

     When she woke up, she found herself lying on the bed. "Is it my home?" She looked around and

saw a smiling couple (夫妇). The couple gave her some delicious food to eat. They treated  her as

their own child. Now she is living with the couple happily.    

1. 判断正误(“T”表示正确,“F”表示错误)

     ( ) Li Yan's parents got, married again when she was eight years old.

2. Li Yan was too _______ to find a job to make money.

3. Why did Li Yan's father hit her with a stick?

                                                                        

4. Who helped Li Yan at last?

    __________________________________

5. 将文中画线句子译成汉语。

    __________________________________

题型:多项选择题

下列除哪项外,均用扣锅煅法炮制()。

A.丝瓜络

B.灯心草

C.荷叶

D.蜂房

E.大蓟

题型:多项选择题

计算机感染病毒后应该采取适当的措施阻止病毒的进一步感染,下面的操作中无效的是 (28)

A.对硬盘重新格式化

B.下载并安装操作系统的安全补丁

C.删除感染病毒的文件

D.将机器关闭一段时间后再打开

题型:多项选择题

一个事务完成后,它对数据库的改变必须是永久的,即使系统可能出现故障。这是事务的( )。

A.原子性
B.一致性
C.隔离性
D.持久性

题型:多项选择题

城市社会学具体研究方法

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