更多“(________)局域网是在小范围内组成的计算机网络,其范”相关的问题
手厥阴经的终点与何经的起点相接（）。
A.手少阳经 B.手阳明经 C.手太阳经 D.手太阴经 E.以上都不是
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多巴胺可用于治疗A、心脏骤停，急性肾衰竭B、急性肾衰竭，抗休克C、支气管哮喘，抗休克D、支气管哮喘，急
多巴胺可用于治疗 A、心脏骤停，急性肾衰竭 B、急性肾衰竭，抗休克 C、支气管哮喘，抗休克 D、支气管哮喘，急性心功能不全 E、心脏骤停，抗休克
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Most people today think of chocolate as something sweet to eat or drink that can be easily found in stores around the world. It might surprise you that chocolate was once highly treasured. Researchers at the University of Pennsylvania recently released a study. It suggested that people in Central and South America first gathered the cacao plant much earlier and for a different use than experts once thought. ① The researchers examined the chemistry of substances found in ancient clay containers that were over three thousand years old. They discovered that the substance came from an alcoholic drink made from the fruit of the cacao plant. The researchers believe it was the interest in cacao as an alcoholic drink that led to the use of its bitter seeds to make what is now known as chocolate. ② Historians believe the Maya people of Central America first learned to farm cacao plants around two thousand years ago. The Maya took the cacao trees from the rainforests and grew them in their gardens. They cooked the cacao seeds, and then crushed them into a soft paste. They mixed the paste with water and flavorful spices to make an unsweetened chocolate drink. The Maya poured the chocolate drink back and forth between two containers so that the liquid had a layer of bubbles, or foam. ③ Cacao and chocolate were an important part of Maya culture. There are often images of cacao plants on Maya buildings and art objects. Ruling families drank chocolate at special ceremonies. And, even poorer members of society could enjoy the drink once in a while. Historians believe that cacao seeds were also used in wedding ceremonies as a sign of the union between a husband and wife. The Aztec culture in current day Mexico also prized chocolate. But, the cacao plant could not grow in the area where the Aztecs lived. So, they traded to get cacao. They even used cacao seeds as a form of money to pay taxes or give as holy offerings to the gods. Only the very wealthy people in Aztec societies could afford to drink chocolate because cacao was so valuable. Some experts believe the word for chocolate came from the Aztec word "xocolatl" which in the Nahuatl language means “bitter water”. Others believe the word "chocolate" was created by combining Mayan and Nahuatl words. The explorer Christopher Columbus brought cacao seeds to Spain after his trip to Central America in 1502. But it was the Spanish explorer Hernando Cortes who understood that chocolate could be a valuable investment. In 1519, Cortes arrived in current day Mexico. He believed the chocolate drink would become popular with Spaniards. After the Spanish soldiers defeated the Aztec empire, they were able to seize the supplies of cacao and send them home. Spain later began planting cacao in its colonies in the Americas in order to supply the large demand for chocolate. The wealthy people of Spain first enjoyed a sweetened version of the chocolate drink. Later, the popularity of the drink spread throughout Europe. The English, Dutch and French began to plant cacao trees in their own colonies. Chocolate remained a drink that only wealthy people could afford to drink until the eighteenth century. During the period known as the Industrial Revolution, new technologies helped make chocolate less costly to produce.
A．The Maya people.B．Christopher Columbus.C．The Spanish.D．The Aztecs.
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通常作为中药的无效成分的是
A.鞣质
B.胆汁酸
C.马钱子碱
D.银杏内酯
E.补骨脂内酉旨
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你需要在一座大厦中设计一个100MBPS的以太网络，使用utp线缆，下列线缆你需要使用的是？（）
A、所有线缆都可以
B、屏蔽双绞线1类线
C、非屏蔽双绞线四类线
D、非屏蔽双绞线五类线
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由于使用不当致使高压灭菌锅锅内压力、温度偏高而引发爆炸，此种爆炸属于（）
A . A、物理爆炸
B . B、化学爆炸
C . C、核爆炸
D . D、分解爆炸
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A . 正值B . 0C . 负值D . 不确定
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为纪念中国航天飞行员遨游太空一周年，作家王某于2005年9月写成报告文学《伟大的战略出击》一书的初稿，10月修改定稿，11月由出版社正式出版，12月经版权登记。王某从何时起取得正式出版的《伟大的战略出击》一书的著作权
A．9月
B．10月
C．11月
D．12月
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交流接触器的触头按接触情况可分为( )、( )和( )三种;按触头的结构形式可分为( )和( )两种;按通断能力可分为( )和( )。
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Lab颜色模式中的a代表（）
A.红色的量
B.红绿的量
C.绿色的量
D.蓝色的量
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驱动力是传递到车轮上的（）对车轮半径之比。
A.有效转矩 B.最大转矩 C.有效功率 D.最大功率
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电气设备着火时，应使用（）灭火。
A.泡沫灭火器
B.干式灭火器
C.自来水
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二冲程电控柴油机的最低稳定转速一般是：（）。
A.不大于45%额定转速
B.不大于40%额定转速
C.不大于30%额定转速
D.不小于1/6额定转速，不大于30%额定转速
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现阶段党内领导人的选举方式是：（）。
A.差额选举
B.等额选举
C.以上都包括
D.以上都不对
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人和人之间是利益关系是（)的思想。
A、儒家B、法家C、道家D、墨家
B、法家C、道家D、墨家
C、道家D、墨家
D、墨家
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