【单选题】引起烷烃构象异构的原因是
C.
分子中的两个碳原子围绕 C-C 单键作相对旋转
【判断题】Consequently, the so-called social network advertising has become another fast-growing means of advertising—online advertising with a focus on social networking sites. As a matter of fact, this is a r...
【单选题】Use the underlined context clues to guess the word meaning in the following sentences: The earth is getting hotter because of global warming. So water get evaporated and consequently, the land dries o...
【单选题】下列哪一个选项不属于文化型旅游者的特点。
【多选题】下列哪些属于旅游市场营销特征?( )
A.
旅游产品对于消费者而言是一种高投入、高风险的产品
B.
旅游产品的提供通常需要多个不同的行业部门通过合作来实现
C.
旅游市场营销同其他服务 营销相比更注重以供给为导向