【多选题】以下属于典型B2B电子商务模式的网站有( )。
【简答题】The driver ____ the policeman's signal and turned in the wrong direction.
【判断题】direction-signal light转向灯的翻译是否正确?
【单选题】绿色营销观念的产生主要是以下环境因素变化的结果( )。
【判断题】When skimming, we watch for signal words or phrases to follow the author’s direction.
【判断题】When skimming, we watch for signal words or phrases to follow the author’s direction.
【单选题】signal the direction of a writer’s thoughts and they are like the road signs that guide travelers.
【简答题】维生素K在临床上主要用于防治多种原因导致的出血,其止血机制是可作为辅酶在肝内参与凝血因子____、____、____、____的合成。