皮皮学，免费搜题
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搜题
【单选题】
以下有关搜索引擎的说法，不正确的是( )。A.
在Internet上有很多搜索引擎，如Google、百度等
B.
若用户用双引号将所需查询的关键字括起来，说明用户需要查询完全匹配的信息
C.
描述符号“-”用于限制符号后面的关键字必须出现在检索结果中
D.
搜索引擎实际上也是一个网站，此类网站的主要作用是提供信息检索服务
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
【多选题】延胡索的性状鉴别特征为（）
A.
块茎呈不规则扁球形、倒圆锥形
B.
表面黄色或黄褐色，有不规则网状皱纹
C.
外皮上端有略凹陷的茎痕，底部有疙瘩状凸起
D.
质坚硬，角质样，有蜡样光泽
E.
气微，味苦
【简答题】Cloze Fill in each blank an appropriate word to make the passage both grammatically and semantically complete. It was late in the afternoon, and I was putting the final touch on a piece of writing tha...
【多选题】延胡索的鉴别特征有
A.
块茎呈不规则扁球形,表面有网状皱纹
B.
断面黄色,角质样
C.
气微,味苦
D.
顶端有凹陷的茎痕,底部中央略呈凹脐状
E.
主要镇痛成分为延胡索乙素
【单选题】The portraits ______ look like them, but I was still unsure of my painting techniques.
A.
did
B.
does
C.
to do
D.
doing
【简答题】It was late in the afternoon, and I was putting the final touch on a piece of writing that I was feeling pretty good about. I wanted to save it, but my cursor had frozen. I tried to shut the computer ...
【简答题】延胡索的鉴别特征,化学成分及常见伪品
【简答题】It was late in the afternoon, and I was putting the final touch on a piece of writing that I was feeling pretty good about. I wanted to save it, but my cursor had frozen. I tried to shut the computer ...
【简答题】幼儿歌曲演唱考试五首歌曲分别是?
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