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【单选题】
整流与逆变的转换对变流器而言,只是( )的改变。A.
输出电压
B.
控制角
C.
输入电压
D.
逆变角
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举一反三
【多选题】Part III Cloze (1.5*10=15 points) Section A In this section, you will read a story about Kerry. Please fill in the blanks with the given words. 在本节中,阅读 Kerry 的故事,在空白填入合适的选项。
A.
went
B.
did
C.
found
D.
took
E.
started Last August, our class 41 something very exciting on our school trip. We 42 to Mount Hua. We 43 our trip at 8:00 in the morning. Everyone in our class 44 a bag with some food and water. After three hours, someone looked at the map and 45 _out we were not anywhere near the top.
【简答题】城市植被分类体系中的 群落是长期适应城市气候、土壤等因素的结果，具有抗逆性强、适应性强等特点，增加了当地生态系统的物种多样性。
【简答题】【动词填空 用括号内所给动词的适当形式填空，并将答案写在答题卡标有题号的横线上。（本大题共8分，每小题1分） 小题1】—Did the book give the information you need? —Yes. But ______ (find) it, I had to read the whole book. 小题1: “You needn’t describe Jimmy any m...
【多选题】与其它土壤相比，城市绿地土壤具有的特点是（）。
A.
土体内侵入体丰富
B.
土壤剖面层次被破坏
C.
土壤有机质含量低
D.
物理性状差，土壤碱度高
E.
管道设施压制
【单选题】8,Our school did not ___ for Christmas until mid-December.
A.
break out
B.
break down
C.
break in
D.
break up
【简答题】用括号里单词的适当形式填空。 1. He is (real) a good teacher in our school. 2. He made faces (make) us laugh. 3. He was the one who did the (little) of the work and got the most of the money. 4. - you (be) to the ho...
【简答题】在外加电场的作用下,电介质中出现有序排列的电偶极子,表面出现束缚电荷的现象称为()。
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