响应式工具可以让用户在不同尺寸的设备上看见不同的布局效果。
正确
错误

Hotels, like airlines, tend to change room rates accord...

单项选择题Hotels, like airlines, tend to change room rates according to the level of demand.  
A、正确
B、错误

变量的显著性检验属于什么检验？ A、计量经济学意义检验 B、统计学意义检验 C、经济意义检验 D、预测检验

单项选择题变量的显著性检验属于什么检验？
A、计量经济学意义检验
B、统计学意义检验
C、经济意义检验
D、预测检验

It is difficult to define precisely the meaning of same...

单项选择题It is difficult to define precisely the meaning of same body language, like raising eyebrow, in a particular culture.
A. 对 B. 错