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【简答题】
EDTA 的结构式及 EDTA 与金属离子形成的螯合物有哪些特点?
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知识点:
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【单选题】What should students remember about on-campus living?
A.
They have to follow certain housing rules.
B.
A deposit may be required for the dorm.
C.
on-campus apartments are very limited.
D.
They should bring furniture themselves.
【单选题】T淋巴细胞具有( )
A.
SmIg
B.
TCR
C.
C3b受体
D.
TNF-α受体
E.
IFN-α受体
【单选题】I remember that in my childhood I had great enjoyment in living in the countryside where all the flowers were _________ in spring.
A.
booming
B.
blooming
C.
glooming
D.
living
【单选题】我国的《环境空气质量标准(GB3095-96)》中规定,二级标准时可吸人颗粒物的日平均浓度限值为
A.
0.05mg/m3
B.
0.10mg/m3
C.
0.15mg/m3
D.
0.20mg/m3
E.
0.30mg/m3
【单选题】对于采石场的大气环境影响评价,关键在于分析生产过程中产生的TSP、PM 10 的影响。我国《环境空气质量标准》(GB 3095—1996)中规定的TSP和PM10的日均浓度限值二级标准分别为(    )。
A.
0.20mg/m 3 ,0.10mg/m 3
B.
0.50mg/m 3 ,0.25mg/m 3
C.
0.30mg/m 3 ,0.15mg/m 3
D.
0.12mg/m 3 ,0.05mg/m 3
【单选题】刀具按照用途可以分为:片力、砍刀、特殊刀和( )。
A.
圆头刀
B.
方头刀
C.
尖头刀
D.
前片后剁刀
【单选题】Why did nobody in the Living Land remember Hector?
A.
Because de la Cruz had stolen all his songs.
B.
Because he was not talented enough to become a famous musician.
C.
Because his family hadn't put his photo on their ofrenda.
D.
Because he wasn't a kind man
【单选题】刀具按照用途可以分为:片刀、砍刀、特殊刀和()。
A.
圆头刀
B.
方头刀
C.
尖头刀
D.
【判断题】在我国出口农副产品中采用“FAQ”来说明品质一般指的中等货而言。()
A.
正确
B.
错误
【简答题】刀具按照用途可以分为:片刀、砍刀、特殊刀和( )。
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