毒物中毒的严重程度与后果往往取决于作用毒物的剂量、作用的时间以及诊断和救治是否准确与及时等。对于急性中毒者,必须迅速做出准确判断,及时果断地采取有效的救治措施,以挽救生命、减轻损害程度。以下有关中毒后药物拮抗的事例中,属于物理性拮抗的是()
A. 药用炭吸附
B. 弱碱中和强酸
C. 二巯丙醇"驱汞"治疗
D. 依地酸钙钠解救铅中毒
E. 阿托品拮抗有机磷中毒
查看答案
扑救容器内液体着火时为什么不能直接对准燃烧液面进行扑救?
A green buoy has a yellow triangle on it. This is a(n)().
A. information or regulatory buoy that has lateral significance
B. buoy that is off-station and is marked to warn mariners of its wrong position
C. dual purpose marking used where the ICW and other waterways coincide
D. buoy that was set in error and will be replaced with a red nun buoy
NPN三极管的集电极电流是总电流,它等于发射极和基极电流之和。
A. 正确
B. 错误