单项选择题

2018年10月1日开始，食品包装上的标志出现重大调整。消费者熟悉的QS标志被更换，取而代之的是全新标志是

A． “SQ” 标志
B． “SC” 标志
C． “GB” 标志   
D． “ISO” 标志
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听力原文：W: Have you guys decided whether you are going to get an apartment off campus next year or you are staying in the dorm?M: We are still talking about the pros and cons. I don't know. To me it seems like six of one and halfa dozen of the other.Q: What does the man mean?(15)A.He wants to live off campus.B.There are advantages and disadvantages to living off campus.C.Living space in the dorm is crowdeD.D.There are only a few apartments available off campus.
A.Q:
B.He
C.
B.There
D.
C.Living
E.
D.There
多项选择题
按照返混程度的不同，反应器内的流体流动模型有（）。
A.流化床模型
B.平推流模型
C.部分返混模型
D.全混流模型
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