人机系统的( )主要取决于人机功能分配的合理性、机器的本质安全性及人为失误状况。
A．安全性 B．选择性C．适用性 D．合理性
参考答案：A
根据句意及首字母提示补全单词
1. -Do you have a fever?
-Yes, I must take some m__________.
2. Good health is more important than w__________.
3. H__________ up, or you'll be late for class.
4. Miss Wang said, "Cui Xiaoyun and Xiang Rui, please help y__________ to some apples and bananas."
5. The doctor said my sister's illness was not s__________. She just had a cold.
（）是组成社会的基本单元，也是社会消防管理的基本单元。
A．单位
B．政府
C．部门
D．个人
