【单选题】关于青霉素G叙述正确的是
E.
不耐酸、不耐青霉素酶、抗茵谱窄易引起变态反应
【单选题】______ if I had attended your home party yesterday without informing you beforehand?
A.
Would you have been surprised
B.
Had you been surprised
D.
Would you be surprised
【单选题】The manager requested that the task _____ by five o'clock without delay. [ ]
【单选题】铝合金门窗的名称中通常以“××系列”表示(如40系列平开窗,90系列推拉窗等),试问系列是指以下何者?[1997-022,2001-047,2004-111]
【简答题】两点法测量圆度是在零件的( )按( )测量零件直径的变化情况,取( )测得值中的( ),作为该截面圆的圆度误差。