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【单选题】
日本国名的含义是()。
A.
太阳
B.
本来的太阳
C.
太阳落下的地方
D.
太阳升起的地方
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【单选题】唾液中的消化酶主要是
A.
淀粉酶
B.
溶菌酶
C.
麦芽糖酶
D.
肽酶
E.
凝乳酶
【多选题】垄断竞争厂商达到长期均衡时:
A.
超额利润 = 0
B.
P>LMC
C.
超额利润 > 0
D.
P>LAC
【单选题】垄断竞争厂商达到长期均衡时( )
A.
MR=LMC=SMC       P=LAC =SAC
B.
P >LMC
C.
d与D曲线相交
D.
其他选项都对
【简答题】C. Now listen to some tips for foreigners on how to do online-shopping in China. Listen carefully and supply the missing information to complete the summary China has a number of its own mature ______...
【多选题】垄断竞争厂商达到长期均衡时
A.
超额利润=0
B.
P>LMC
C.
d与D曲线相交
D.
P>LAC
【单选题】A Foreign Trade Talk A company in America wants to import some toys and dolls from China. Mr. Baker, the representative of the American side, was sent to Shanghai to hold a business talk. Mr. Li from ...
A.
Because he has to ask his boss for instructions.
B.
Because he needs to wait for his boss’s arrival.
C.
Because he needs to get permission from his wife.
D.
Because he has to send telegrams to his customers.
【简答题】下列氧化剂:1.KClO3、2.Br2、3.FeCl3、4.KMnO4、5.H2O2,当其溶液中H+浓度增大时, 氧化能力增强的是。(直接写序号,中间不空格也不加标点符号)
【简答题】下列氧化剂:1.KClO3、2.Br2、3.FeCl3、4.KMnO4、5.H2O2,当其溶液中H+浓度增大时, 氧化能力增强的是。(答案只写序号,中间不空格也不加标点符号)
【单选题】当溶液中增加 c (H + ) 时,氧化能力不增强的氧化剂是( )。
A.
硝酸根
B.
重铬酸根
C.
氧气
D.
氯化银
【多选题】垄断竞争厂商达到长期均衡时( )。
A.
超额利润 = 0
B.
P > LMC
C.
D曲线与AR曲线重合
D.
P > LAC
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