【简答题】化学反应速率通常用单位时间内( )的减少或( )的增加来表示。
【判断题】化学反应速率通常用单位时间(每秒、每分、每小时等)内反应物浓度的减少或生成物浓度 的增加来表示,且只取正值。( )
【多选题】有关无菌室设置的要求描述不恰当的有
A.
无菌室应有内、外两间,内间为无菌室,外间为缓冲室
E.
为保证无菌室的无菌效果,无菌室不应该设置通气窗
【单选题】库存现金盘点时发现账面余额和实存金额相差45元,通过查找法发现有可能的记账错误是()
【单选题】What can we learn about the McGarity girl?
A.
She is proud but honest.
B.
She is selfish and cruel.
C.
She is lonely but friendly.
D.
She lives in unhappy life.
【简答题】化学反应速率通常用单位时间内( )浓度的减少或( )浓度的增加来表示。
【单选题】She does not think there is anything he can______.
【简答题】A.She is selfish and cruel. B.She is kind and polite. C.She is proud and helpful. D.She is lonely and unhappy.