【多选题】NoSQL数据库的优势有
A.
NoSQL数据库去掉了传统数据库的关系型特征,因此易于扩展
B.
由于NoSQL数据库结构简单,所以它在大数据量下的读写性能很好
C.
NoSQL数据库可以随时存储自定义的数据格式
【单选题】It is not until recently ______ there are many different kinds of hearing defects.
A.
have the scientists discovered
B.
the scientists have discovered
C.
that the scientists have discovered
D.
that will the scientist have discovered
【单选题】在实验室里配制FeSO 4 溶液时,有人在溶液中加入一只纯铁钉,其原因是( )。
D.
能产生适量氢气,使瓶内保持正压,容易打开瓶塞
【单选题】从“是以圣人处无为之事”这句话中,我们可以看出老子提倡圣人应该()。
【判断题】. 配制 FeSO 4 溶液时,加入铁钉可以防止 Fe 2+ 变成 Fe 3+ 。 ( )
【单选题】使用避污纸正确的方法是
E.
掀开抓取 (37 ~ 38 题共用题干) 患者,女性,59 岁。 诊断为“乙型肝炎”。
【简答题】回到顶部交互效果 back2top_hover.jpg back2top_normal.jpg feedback_hover.jpg feedback_normal.jpg mobile_hover.jpg mobile_normal.jpg
【判断题】配制 FeSO 4 溶液时,加入铁钉可以防止 Fe 2+ 变成 Fe 3+ 。
【单选题】The majority of people, about nine out of ten, are right-handed. Not until recently, people who were left-handed were considered______【51】, and once children showed this tendency they were forced to u...
【单选题】People have been complaining about SK-II recently and think the advertisements always persuade people _________ the products which are not so good.