皮皮学，免费搜题
登录
搜题
【判断题】
查全率与查准率是评价检索效果的两项重要指标。A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【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
【简答题】在电离层中,__层和F1层,白天存在,夜晚消失。
【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( )。
A.
除去溶液中杂质，使溶液更纯净
B.
阻止Fe 2+ 被氧化成Fe 3+
C.
消除溶液中过量的酸
D.
能产生适量氢气，使瓶内保持正压，容易打开瓶塞
E.
毫无作用
【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（）。
A.
不做任何事情
B.
事必躬亲
C.
按照自己主观的想法去做事情
D.
不要按照自己主观的想法去做事情
【单选题】使用避污纸正确的方法是
A.
戴手套后拿取
B.
用镊子夹取
C.
从页面上中间抓取
D.
经他人传递
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
【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...
A.
unique
B.
eccentric
C.
normal
D.
abnormal
【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.
A.
buy
B.
to buy
C.
buying
D.
bought
相关题目：
参考解析：
知识点：
题目纠错 0
发布
