小儿肠套叠的X线表现
A.炎症性病变B.穿孔性病变C.出血性病变D.梗阻性病变E.绞窄性病变
参考答案:A
---What do you think of his talk on Information Technology?
---Oh, excellent. It's worth ________.
A.listening to
B.being listened to
C.listening of
D.to be listened to
氯仿可用作全身麻醉剂,但在光照条件下,易被氧化,生成剧毒的光气(COCl2),反应为
2CHCl3+O22HCl+2COCl2。为防止发生医疗事故,在使用前要先检查氯仿是否变质,用下列试剂检验,效果最好的是[ ]
A.烧碱溶液
B.溴水
C.KI淀粉溶液
D.AgNO3溶液