【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( )。
【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。