题目:
禁止在饲料中使用的药物为()
A、那西肽
B、杆菌肽锌
C、二硝托胺
D、莱克多巴胺(一种兴奋剂)
E、马杜霉素胺
答案:
参考答案:D
禁止在饲料中使用的药物为()
A、那西肽
B、杆菌肽锌
C、二硝托胺
D、莱克多巴胺(一种兴奋剂)
E、马杜霉素胺
参考答案:D
ROC确定的临界值,它反映了()
A.最佳的敏感度
B.最佳的特异度
C.最佳阳性预测值
D.最佳阴性预测值
E.敏感度与特异度处于最满意状态
亚里士多德是西方政治学的奠基人,反映其政治思想的主要著作是《政治学》和《()》。
A.经济学
B.本质和政体
C.雅典政制
D.社会团体
Dear Dean, It is my understanding that this college has received a large donation to be used to improve the quality of life for students: expand the bookstore or add computers to the lab. I strongly argue in favor of the addition of more computers. We have to think about a greater goal and a more practical way to enhance the quality of life for students. Do we want our college to be known as a place with a great bookstore where you can find CDs and gifts, or as a place where the students can research in their field using the best tools provided by technology? As a learning institution, this college has the responsibility to offer its students the best technology to help them prepare for their future, since many students will be expected to be familiar with the latest software and other tools when they go on to work. While they are in college, students find they are expected to use computers. They are asked to create PowerPoint presentations and research many topics on the Internet. Being able to do projects using the computer also gives students the opportunity to find information that without a computer would be much more difficult to find. Since students are competing for good grades, those who have limited access to computers are at a great disadvantage. If there are more new and faster computers accessible, students will be able to complete their work more efficiently. No more will they have to wait in line, paper and disk in hand, while scanning the room for an empty chair and computer. No longer will they have to sit and wait while an outdated computer struggles to follow their commands. The more computers are used in society, the more colleges will depend on them as a tool of teaching and learning. Making computers more accessible to students facilitates their learning process by making it much easier and more engaging(专注), and eventually improves their quality of life. 小题1:The purpose of the author in writing the passage is________.
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关于易激惹性的说法,正确的是()
A.常见于疲劳状态及人格障碍
B.指因小事而引起较强烈的情感反应
C.属于情感协调性的改变
D.可见于躁狂症及精神分裂症
E.一般持续时间较短
双臂电桥可用来测量阻值在()之间的绕组电阻。
A.1Ω以上
B.5Ω以上
C.5~10Ω
D.10Ω以下