<properties resource="db.properties"></properties>Mybatis环境配置文件中这行代码的作用是（） A: 注册别名 B: 配置数据源环境 C: 配置事务管理 D: 加载属性文件

Mybatis核心配置文件中的<properties>元素，可以将外部的properties文件加载到核心配置文件。

The villagers,______had been washed by the flood, called in people's aid. A: all of whose properties B: all their properties C: all whose properties D: all of their properties

The physical properties are those properties of a substance that can be observed with changing the substance into other substances.

 colligative properties 

Physical properties are those properties which are in the material and cannot be permanently altered without changing the material itself.

2.Bond Properties include ； ； 。

The physical properties are those properties of a substance that can be observed with changing the substance into other substances. A: 正确 B: 错误

关于Properties类中的load和store方法说法正确的是 A: load方法从流中读取属性列表，键值对，加载到Properties对象中 B: store方法将Properties对象中的键值对，加载到Properties对象中 C: load方法将Properties (Properties)对象中的内容加载到文件中 D: 以上说法都不对

Which of the following are properties of logarithms?（ ）