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【多选题】
下列有关准确度、精密度、系统误差、偶然误差之间的关系的说法中正确的是( )A.
准确度高，精密度一定高
B.
精密度高，不一定能保证准确度高
C.
系统误差小，准确度一般较高
D.
偶然误差小，准确度一定高
E.
准确度高，系统误差与偶然误差一定小
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反馈参考答案：
举一反三
【简答题】听下面一段材料，回答第1和第2题。 1. What do the speakers decide to do? A. Ask Carrie for help. B. Buy a huge cake. C. Play cards. 2. Who will probably get surprised at the party? A. Maggie. B. The man. C. Jackie.
【单选题】患者,男性,62岁,患慢性支气管炎,最近咳嗽加剧,痰黏稠,伴呼吸困难,给予超声雾化吸入治疗19.超声雾化治疗的目的不包括
A.
消除炎症
B.
解除支气管痉挛
C.
稀化痰液
D.
帮助祛痰
E.
促进食欲
【单选题】查阅《国际危规》时，应根据( )即可从危险货物一览表查取某种危险货物的联合国编号。
A.
货物的正确运输名称
B.
货物的国际编号
C.
根据以上资料还不够
D.
A或B
【简答题】根据所听材料，回答 2～4 题 第 2 题 Why do the man's parents fail to come? [A] Because the flights are cancelled due to a strike. [B] Because his parents are busy with an important meeting. [C] Because his parents ...
【简答题】根据听到的内容，回答 2～4 题 第 2 题 What will the woman have to do in a few months according to the conversation? [A] Going through the passport formalities. [B] Connecting with the university. [C] Applying to stu...
【单选题】Sound waves travel in the air in much the same way _____ water waves spread on the water.
A.
as
B.
that
C.
where
D.
in which
【单选题】查阅《国际危规》时，应根据（ ）即可从危险货物一览表查取某种危险货物的联合国编号I、货物的正确运输名称II、货物的国际编号III根据以上资料还不够。
A.
I
B.
II
C.
III
D.
I或II
【单选题】(Sound waves) travel (in the air) in much (the same) way (like) water waves spread on the water.
A.
Sound waves
B.
in the air
C.
the same
D.
like
【单选题】听下面一段对话，回答第11和第l2题。 What do the speakersdecide to do?
A.
AskCarrie for help．
B.
Buy ahuge cake．
C.
Playcards．
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