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【简答题】
称取工业原料氟化钙0.5000g,于250ml烧杯中,加水使试样湿润,用盐酸及硼酸溶解以后移动入250ml容量瓶中,用水稀释至刻度.移取25ml于锥形瓶中,加入三乙醇胺掩蔽杂质铁,铝,在PH=12时,用0.02000mol/LEDTA溶液滴定,问约消耗EDTA溶液多少毫升?提示:工业原料CaF2一般含量为98%左右,CaF2的摩尔质量为78.08g/mol
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举一反三
【单选题】马克思、恩格斯发表《共产党宣言》的时间是
A.
1844年2月
B.
1844年8月
C.
1848年2月
D.
1871年3月
查看完整题目与答案
【单选题】听力原文：If one of the food links is not kept, what will happen to the food chains? (12)
A.
Breaking up.
B.
Dying out.
C.
Stopping.
D.
Disappearing.
查看完整题目与答案
【单选题】What do sales figures reflect in free market terms?
A.
They reflect the manufacturers' decision of production cut-backs.
B.
They reflect the state of local market forces at any one place and at any one time.
C.
They reflect the demands and supplies of a corporation.
查看完整题目与答案
【单选题】What links cognitive development to the needs of society?
A.
Practical purpose.
B.
Natural human cognitive development.
C.
Language.
D.
Warning of danger.
查看完整题目与答案
【单选题】在我国GDP支出法核算中，I等于
A.
固定资本形成总额加上存货变动
B.
固定资本形成总额
C.
存货变动
D.
固定资本总额与存货变动的平均数
查看完整题目与答案
【单选题】肝糖原可以补充血糖,因为肝脏有
A.
葡萄糖激酶
B.
磷酸葡萄糖变位酶
C.
葡萄糖-6-磷酸酶
D.
磷酸己糖异构酶
查看完整题目与答案
【单选题】Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links？（）
A.
use BGP as the CE-PE routing protocol
B.
use OSPF as the CE-PE routing protocol
C.
use EIGRP as the CE-PE routing protocol
D.
use the SP to redistribute routes as external routes for OSPF and EIGRP
E.
use route redistribution at each location to ensure external routes are imported into the IGP
查看完整题目与答案
【单选题】What links the decisions of consumers and firms in a market?
A.
the government.
B.
prices.
C.
coordination officials.
D.
microeconomics.
查看完整题目与答案
【单选题】Judging from the context, what does the word 'them' (line 4, paragraph 2) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
查看完整题目与答案
【单选题】Judging from the context, what does the word 'them' (Line 4, Paragraph 4) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
查看完整题目与答案
相关题目：
【单选题】马克思、恩格斯发表《共产党宣言》的时间是
A.
1844年2月
B.
1844年8月
C.
1848年2月
D.
1871年3月
查看完整题目与答案
【单选题】听力原文：If one of the food links is not kept, what will happen to the food chains? (12)
A.
Breaking up.
B.
Dying out.
C.
Stopping.
D.
Disappearing.
查看完整题目与答案
【单选题】What do sales figures reflect in free market terms?
A.
They reflect the manufacturers' decision of production cut-backs.
B.
They reflect the state of local market forces at any one place and at any one time.
C.
They reflect the demands and supplies of a corporation.
查看完整题目与答案
【单选题】What links cognitive development to the needs of society?
A.
Practical purpose.
B.
Natural human cognitive development.
C.
Language.
D.
Warning of danger.
查看完整题目与答案
【单选题】在我国GDP支出法核算中，I等于
A.
固定资本形成总额加上存货变动
B.
固定资本形成总额
C.
存货变动
D.
固定资本总额与存货变动的平均数
查看完整题目与答案
【单选题】肝糖原可以补充血糖,因为肝脏有
A.
葡萄糖激酶
B.
磷酸葡萄糖变位酶
C.
葡萄糖-6-磷酸酶
D.
磷酸己糖异构酶
查看完整题目与答案
【单选题】Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links？（）
A.
use BGP as the CE-PE routing protocol
B.
use OSPF as the CE-PE routing protocol
C.
use EIGRP as the CE-PE routing protocol
D.
use the SP to redistribute routes as external routes for OSPF and EIGRP
E.
use route redistribution at each location to ensure external routes are imported into the IGP
查看完整题目与答案
【单选题】What links the decisions of consumers and firms in a market?
A.
the government.
B.
prices.
C.
coordination officials.
D.
microeconomics.
查看完整题目与答案
【单选题】Judging from the context, what does the word 'them' (line 4, paragraph 2) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
查看完整题目与答案
【单选题】Judging from the context, what does the word 'them' (Line 4, Paragraph 4) refer to?
A.
Decision makers.
B.
The 'losing' faction.
C.
Anger, resentment, and jealousy.
D.
Other people.
查看完整题目与答案