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【简答题】
PN结上外加电压，若P______电位端，N______电位端，称为______偏置，PN结导通，反之，PN结截止。
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【简答题】过渡元素中熔点最高的金属是( )，密度最大的金属是( )，硬度最高的金属是( )。
【简答题】根据短文内容，判断以下句子的正(T)误(F)。 When we meet someone for the first time, we often would like to talk about ourselves. We just want to show the best to others. But why not listen? Sometimes, listening is bette...
【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
they use proper words to carry their ideas
B.
they both speak truly of their own feelings
C.
they try to understand each other's ideas beyond words
D.
they are capable of associating meaning with their words
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