【简答题】实验室里的化学药品的储存,以下说法错误的是__A. 必须坚持双人保管、双人收发、双人使用、双人运输、双人双锁的“五双”制度 B. 化学药品的储存和保管可以开架存放 C. 剧毒物品购买后应及时入库,不得暂存他处,并且必须经过称量、登记后方可入库 D. 剧毒品的瓶签要有鲜明、醒目的标签,以防混淆
【单选题】( )8. — Do you think most of the people in Shanghai can speak English? — Yes, I think so. ____ the young but the old are learning to speak English. A. Both B. Neither C. Either...
【简答题】Doctors are so busy that they can usually only see ____________________ or those with serious conditions or injuries. 2. Most people would prefer to see their _____________________ in the of il...