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【单选题】
用薄层色谱法分离两极性组分,其R f 分别为0.198和0.203,可采取下列哪种措施改善分离度()。
A.
换用极性较弱的展开剂
B.
采用多次展开法
C.
换用吸附性较强的固定相
D.
使层析槽中溶剂蒸汽充分饱和再展开
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【单选题】听力原文：M: Shall we take our seats now? We can always get some later. W: The lights are about off, but I'd like to buy some ice-cream before the play starts. What does the woman suggest that they should ...
A.
Buy some ice-cream.
B.
Wait for the lights to be turned off.
C.
Go immediately to get their seats.
D.
Enjoy the play.
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【单选题】《立法法》对法律案的审议做了规定。人大代表（或常委）对法律案的审议是人大代表行使立法权的重要环节，同时也是最终通过的法律能够更加合理、更加具有代表性的保障。因此，对人大代表（或常委）审议法律案环节的民主性和（ ）都提出了很高的要求。
A.
严肃性
B.
公开性
C.
透明性
D.
规范性
查看完整题目与答案
【单选题】－－Shall we meet right now? －－Sorry. I’m too busy to _______ for the moment.
A.
get through
B.
get away
C.
get off
D.
get together
查看完整题目与答案
【单选题】-Shall we________the things we don’t use to the people in need? -Good idea.
A.
put off
B.
set out
C.
get into
D.
give away
查看完整题目与答案
【单选题】Managerial decisions are decisions about ________.
A.
the utilization of resources
B.
broad organizational issues
C.
the day-to-day activities
D.
strategic decision making
E.
the creation of strategic goals
查看完整题目与答案
【单选题】第25题低碳钢焊缝一次结晶后的组织为( )
A.
马氏体
B.
渗碳体
C.
珠光体
D.
奥氏体
查看完整题目与答案
【判断题】人大代表有立法权。
A.
正确
B.
错误
查看完整题目与答案
【单选题】患儿,3岁,突发寒战、T39.5°C,烦躁不安,诉左膝剧痛,膝关节呈半屈曲状,拒动。查体发现左小腿压痛。在骨膜或骨髓内抽得脓液后,诊断最有可能是( )
A.
膝关节结核
B.
急性化脓性骨髓炎
C.
急性风湿热
D.
关节结核
E.
骨肉瘤
查看完整题目与答案
【简答题】课后作业:教材习题2.11,1+2(a-c)(P41-P42)。 教材: http://www.cmpedu.com/books/pdf.htm?CHAPTERMODEL=https://yingxiao2.s3.cn-north-1.amazonaws.com.cn/2020/pdf4/1581671121491.pdf
查看完整题目与答案
【单选题】About the decisions, which one of the following statements is TRUE?
A.
The decisions aims to put a ban on the sale of the seeds of genetically modified corn due to political and biological concerns.
B.
The decisions are warmly embraced by all EU members but bitterly rejected by their trade partners .
C.
The decisions could probably be made even if no definitive evidence proving the products harmful is found.
D.
There is high possibility that the decisions would be approved by the European Commission.
查看完整题目与答案
相关题目：
【单选题】听力原文：M: Shall we take our seats now? We can always get some later. W: The lights are about off, but I'd like to buy some ice-cream before the play starts. What does the woman suggest that they should ...
A.
Buy some ice-cream.
B.
Wait for the lights to be turned off.
C.
Go immediately to get their seats.
D.
Enjoy the play.
查看完整题目与答案
【单选题】《立法法》对法律案的审议做了规定。人大代表（或常委）对法律案的审议是人大代表行使立法权的重要环节，同时也是最终通过的法律能够更加合理、更加具有代表性的保障。因此，对人大代表（或常委）审议法律案环节的民主性和（ ）都提出了很高的要求。
A.
严肃性
B.
公开性
C.
透明性
D.
规范性
查看完整题目与答案
【单选题】－－Shall we meet right now? －－Sorry. I’m too busy to _______ for the moment.
A.
get through
B.
get away
C.
get off
D.
get together
查看完整题目与答案
【单选题】-Shall we________the things we don’t use to the people in need? -Good idea.
A.
put off
B.
set out
C.
get into
D.
give away
查看完整题目与答案
【单选题】Managerial decisions are decisions about ________.
A.
the utilization of resources
B.
broad organizational issues
C.
the day-to-day activities
D.
strategic decision making
E.
the creation of strategic goals
查看完整题目与答案
【单选题】第25题低碳钢焊缝一次结晶后的组织为( )
A.
马氏体
B.
渗碳体
C.
珠光体
D.
奥氏体
查看完整题目与答案
【判断题】人大代表有立法权。
A.
正确
B.
错误
查看完整题目与答案
【单选题】患儿,3岁,突发寒战、T39.5°C,烦躁不安,诉左膝剧痛,膝关节呈半屈曲状,拒动。查体发现左小腿压痛。在骨膜或骨髓内抽得脓液后,诊断最有可能是( )
A.
膝关节结核
B.
急性化脓性骨髓炎
C.
急性风湿热
D.
关节结核
E.
骨肉瘤
查看完整题目与答案
【简答题】课后作业:教材习题2.11,1+2(a-c)(P41-P42)。 教材: http://www.cmpedu.com/books/pdf.htm?CHAPTERMODEL=https://yingxiao2.s3.cn-north-1.amazonaws.com.cn/2020/pdf4/1581671121491.pdf
查看完整题目与答案
【单选题】About the decisions, which one of the following statements is TRUE?
A.
The decisions aims to put a ban on the sale of the seeds of genetically modified corn due to political and biological concerns.
B.
The decisions are warmly embraced by all EU members but bitterly rejected by their trade partners .
C.
The decisions could probably be made even if no definitive evidence proving the products harmful is found.
D.
There is high possibility that the decisions would be approved by the European Commission.
查看完整题目与答案
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