更多“提高材料抗冻性的方法之一是提高材料内部的 。”相关的问题
下列动物中,属于国家一级保护的有()。
A . 弥猴
B . 云豹
C . 华南虎
D . 白鹇鸟
点击查看答案
轻型井点施工中,水泵安装前必须全面保养,空运转时的真空度应大于()mmHg
A.300
B.500
C.700
D.900
点击查看答案
标准房价是指同一城市不同等级房屋的平均价格,它是房屋价格评估的依据()
A . 正确
B . 错误
点击查看答案
正在谈恋爱的小蔡和小王可以在公共广场上骑2人骑行的自行车。
点击查看答案
渔场学是研究渔业生物资源的行动状态()及其与周围环境()之间的相互关系,查明渔况变动规律和渔场形成原理的科学。
点击查看答案
Refer to the exhibit. Which two statements about the AAA configuration are true?()https://assets.asklib.com/images/image2/201807270944192299.png
A . A good security practice is to havethe none parameter configured as the final method used toensure that no other authentication method will be used
B . If a TACACS+ server is not available, then a user connecting via the console port would not beable to gain access since no other authentication method has been defined
C . If a TACACS+ server is not available, then the user Bob could be able to enter privileged modeas long as the proper enable password is entered
D . Theaaa new-model command forces the router to override every other authentication methodpreviously configured for the router lines
E . To increase security, group radius should be used instead of group tacacs+
F . Two authentication options are prescribed by the displayedaaa authentication command
点击查看答案
A . 白豆B . 绿豆C . 黄豆D . 黑豆E . 赤豆
点击查看答案
拉线按用途和结构不同,可分为哪几种?各起什么作用?
点击查看答案
生后3~4天出现黄疸,黄疸期间一般情况好A.病理性黄疸 B.生理性黄疸 C.胆道闭锁 D.新生儿溶血症
生后3~4天出现黄疸,黄疸期间一般情况好A.病理性黄疸B.生理性黄疸C.胆道闭锁D.新生儿溶血症E.新生儿败血症
A.病理性黄疸B.生理性黄疸C.胆道闭锁D.新生儿溶血症E.新生儿败血症
B.生理性黄疸C.胆道闭锁D.新生儿溶血症E.新生儿败血症
C.胆道闭锁D.新生儿溶血症E.新生儿败血症
D.新生儿溶血症E.新生儿败血症
E.新生儿败血症
点击查看答案
因为历史事件随机发生又不可重复,所以社会历史发展没有规律可循。
点击查看答案
Questions 29 ~ 30 are based on the following news from the BBC or the VOA. At the end of the news ...Which one is not true according to the news
A.Asian regions have been attacked by the disease.
B.European birds are infected by virus.
C.Only a few people have been infected by the disease.
D.All the victims appear to get the disease from contact with birds.
点击查看答案
培养钩端螺旋体的最佳温度是()A.37℃B.35℃C.28℃D.24℃E.20℃
培养钩端螺旋体的最佳温度是()A.37℃B.35℃C.28℃D.24℃E.20℃
A.37℃B.35℃C.28℃D.24℃E.20℃
B.35℃C.28℃D.24℃E.20℃
C.28℃D.24℃E.20℃
D.24℃E.20℃
E.20℃
点击查看答案
原发性甲状旁腺功能减退症与原发性骨质疏松症的区别是()
A . 尿磷/肌酐降低
B . 血钙降低
C . 为PTH缺乏引起
D . 血磷升高
E . PTH降低
点击查看答案