题目：
经 * * 分娩时，为预防产后出血，静注麦角新碱应在（）。
A.胎头拨露阴唇后联合紧张时
B.胎头已着冠时
C.胎头娩出时
D.胎肩娩出时
E.胎盘娩出时
答案：
参考答案：D
解析：经 * * 分娩时，为预防产后出血，可在胎肩娩出的同时，静注缩宫素10U，促使胎盘剥离，减少出血。而胎头拨露阴唇后联合紧张时是保护会阴的时机。故选D。
经 * * 分娩时，为预防产后出血，静注麦角新碱应在（）。 A.胎头拨露阴唇后联合紧张时
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What is high tech A computer is high tech. So is a communications satellite. A modern manufacturing system is surely high tech.
High tech became a popular expression in the United States during the early 1980’s. Because of improvements in technology, people could buy many new kinds of products in American stores, such as home computers, microwave ovens, etc.
"State of the art" is something that is as modern as possible. It is a product that is based on the very latest methods and techn01ogy. Something that is "state of the art" is the newest possible design or product of a business or industry. A state of the art television set, for example, uses the most modern electronic design and parts. It is the best that one can buy.
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