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【单选题】
已知E=2V,R=9Ω,电源两极间电压为1.8V,这时电路中的电流为()A,电源内阻为()Ω?
A.
0.2A,1Ω
B.
0.5A,1Ω
C.
0.2A,2Ω
D.
0.5A,2Ω
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A.
正确
B.
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【简答题】群,组,束,串,n.
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B.
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D.
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【简答题】n.群;组;
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【单选题】What does the example of Czech speakers show?
A.
It's natural for language learners to make errors.
B.
Differences between languages cause difficulty.
C.
Difficulty stems from either difference or similarity.
D.
There exist differences between English and Czech.
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【简答题】n.群;组;束;串;簇
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【简答题】根的初生木质部和初生韧皮部 排列,而茎的为 排列。
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【单选题】The Bronze Age Greeks, or Mycenaeans, such lists show, had created the first highly centralized civilization in Europe - a precursor to city-states, empires and nations from Athens to the Soviet Union...
A.
ancestor
B.
forerunner
C.
foundation
D.
similarity
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【单选题】What is the use of the word “while” in sentence 3 in paragraph 7 ?
A.
to show a contrast between the two situations
B.
to show a similarity between the two situations
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【单选题】C#引入命名空间使用（      ）关键字；
A.
import
B.
using
C.
include
D.
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相关题目：
【判断题】马氏体中含碳量越高,残余奥氏体量越少。
A.
正确
B.
错误
查看完整题目与答案
【简答题】群,组,束,串,n.
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【单选题】热处理加热过程中,高温奥氏体中含碳量越高,冷却时,马氏体开始转变温度Ms点越( ),室温下残余奥氏体的量越( )
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【简答题】n.群;组;
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【单选题】What does the example of Czech speakers show?
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【单选题】The Bronze Age Greeks, or Mycenaeans, such lists show, had created the first highly centralized civilization in Europe - a precursor to city-states, empires and nations from Athens to the Soviet Union...
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