低压触电分为（）触电。A、单线 B、双线 C、跨步电压

有效预防食物中毒的措施有哪些？

On my way home after school there had an accident. A heavy truck hit a bike, caused the young woman on the bike fall to the ground heavily. As a result, one of her legs broken. Blood was running down his leg. A lot of people stood by watching, but everybody gave her a hand. I hurriedly stopped a passed car, and the driver and I carried the injury woman into the car. Then we took her to the hospital of nearby. The doctors treated her in time and she is soon out of danger.

下述哪项与理想的静脉全麻药相符合（）

A.全麻药为气体

B.可在体内滞留较长时间不会代谢

C.在体内不断再分布

D.绝大部分从体内以原形排出

E.对呼吸循环无明显影响

头孢菌素族抗生素药物的特征反应

A．费休法
B．铂电极
C．汞-硫酸亚汞电极
D．萘
E．青霉素V

下图所示国际机构成立的初衷是 

A．稳定国际汇率

B．致力于战后的欧洲经济复兴

C．促进国际贸易自由化

D．为成员国提供短期贷款