皮皮学，免费搜题
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【单选题】
心脏右房室口有A.
二尖瓣
B.
三尖瓣
C.
主动脉瓣
D.
肺动脉瓣
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皮皮学刷刷变学霸
举一反三
【单选题】在某项试验研究中,想着重考察A、B、C三个试验因素分别取四个不同水平条件下对现测指标的影响,已知这三个因素之间不存在交互作用,为了使试验次数尽可能少些,应选择( )
A.
析因设计
B.
成组设计
C.
配对设计
D.
拉丁方设计
【单选题】听力原文：W: I can't believe that you missed the class again. Didn't Professor Wang say something to you about that last time? M: Well, this time is different, I had a good excuse. Something was wrong with...
A.
The man has already spoken to Professor Wang.
B.
Professor Wang will probably excuse the man's absence.
C.
The man has never missed Professor Wang's class.
D.
Professor Wang is not in class today.
【单选题】Giving a welcoming ceremony at the airport can enforce the idea that the visitors are entering a new culture not just a business venture, usually the welcoming place is ______.
A.
the airport lobby
B.
a private room off the crowds
C.
in front of the airplane
D.
anywhere
【简答题】Professor Wang, your senior middle school English teacher, has been teaching for exactly thirty years. Your former classmates are going to hold a party to celebrate this special occasion. You cannot a...
【简答题】Professor Wang is a ______ (respect) person.
【单选题】What is the main purpose of Browns remarks?
A.
Giving a lecture on music.
B.
Welcoming the audience.
C.
Addressing on culture events.
D.
Introducing the lecturer.
【单选题】Giving a welcoming ceremony at the airport can enforce the idea that the visitors are entering a new culture not just a business venture,usually the welcoming place is ______.
A.
the airport lobby
B.
a private room off the crowds
C.
in front of the aeroplane
D.
anywhere
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