问题
单项选择题
浸润麻醉时，在局麻药中加入少量肾上腺素的目的是：
A．减少吸收中毒，延长局麻时间
B．预防心脏骤停
C．用于止血
D．抗过敏
E．预防术中低血压
答案
参考答案：A
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浸润麻醉时，在局麻药中加入少量肾上腺素的目的是：
A．减少吸收中毒，延长局麻时间
B．预防心脏骤停
C．用于止血
D．抗过敏
E．预防术中低血压
参考答案：A
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| Sandwiches are popular in the world, but do you know where they came from? Sandwich was an English 1 . He lived in England about two hundred years ago. Sandwich had 2 money. He was very rich (富有的) and he liked to play 3 . He often played all day and night and had no time to 4 dinner. One day he played for 24 hours and felt very 5 . He asked his servant (仆人) to get him some meat and bread. He put the meat 6 the two slices of bread so that he could 7 playing his cards. People liked 8 idea and called the food sandwich. Today there are many different kinds of sandwiches. You can make them at home or 9 them at restaurants easily. We love sandwiches 10 we can eat them everywhere, at workplaces, schools or parks, and they're not expensive. | ||||
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