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【单选题】
PTC和NTC是( )。A.
正、负电阻温度系数热敏电阻的英文缩写
B.
PN结温度传感器和厚膜铂电阻的英文缩写
C.
正电阻温度系数热敏电阻和热电偶的英文缩写
D.
负电阻温度系数热敏电阻和热电偶的英文缩写
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举一反三
【单选题】In order for the condition E$/HK$ = PUS/PHK to hold, what assumptions does the principle of purchasing power parity make?
A.
Only that there are no transportation costs and restrictions on trade.
B.
Only that the markets are perfectly competitive, i.e., P = MC.
C.
The factors of production are identical between countries.
D.
No arbitrage exists.
E.
HK and US are perfectly competitive and there are no transportation costs or restrictions on trade.
【单选题】I took an aspirin and the pain _____ subsided.
A.
painfully
B.
gradually
C.
steadily
D.
progressively
【简答题】热轧钢残余缩孔的产生原因和改善方法?
【简答题】In order to define the concept of stress, we have to make two assumptions regarding the properties of the material, which are and .
【简答题】用所给连词,应用正确时态连接句子。 1. I took an aspirin. My headache disappeared. (when)
【简答题】为了在第4年底收益2000元,第10年底收益5000元,当前选择这样的投资:前两年每年初投入2000元,第3年初再投入一部分.若季换算名利率为6%,试计算第3年初投入的金额.
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