皮皮学，免费搜题
登录
搜题
【单选题】
如果检索结果,查全率很低,需要调整检索范围,此时调整检索策略的方法有A.
用逻辑 “ 与 ” 或逻辑 “ 非 ” 增加限制概念
B.
用逻辑 “ 或 ” 或截词增加同族概念
C.
用字段算年份增加辅助限制
D.
用 “ 在结果中检索 ” 增加限制条件
E.
使用精确检索
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】﹣Do you think we’ll need a coffee pot? ﹣I don’t drink coffee, and __________. It’s not necessary. Why not a tea service?
A.
so do you
B.
neither do you
C.
so are you
【简答题】Part B Below are a series of pictures showing the problem occurring iii our daily conversation. Look at the pictures and write an essay of about 120 words reference to the following points: 1. ...
【单选题】Please don't call me at the office it's really necessary．
A.
if
B.
unless
C.
otherwise
D.
except
【单选题】It's not necessary for parents to make their kids _______ the things they don't like. [ ]
A.
to do
B.
do
C.
are doing
【单选题】—Do you think we’ll need a coffee pot? —I don’t drink coffee, and ____ .It’s not necessary. Why not a tea service?
A.
so do you
B.
neither you do
C.
neither do you
【单选题】超过刊物退稿时间而转投它刊并被录用,之后又收到前一个期刊社录用通知,这样可能形成一稿两投,如何规避由此产生的学术不端风险?
A.
通知其中一个期刊社放弃稿费
B.
通知其中一个期刊社撤稿
C.
通知这两个期刊社撤稿
【单选题】You ______ include this section. It's not necessary.
A.
wouldn't
B.
couldn't
C.
don't need
D.
don't have to
相关题目：