某电网规划建设一座220kV变电所，安装两台主变，三侧电压为220/110/10kV。220kV、110kV为双母线接线，10kV为单母线分段接线。220kV出线4回，10kV电缆出线16回，每回长2km。110kV出线无电源。电气主接线如下图所示，请回答下列问题。
若主变高压侧并列运行，为限制该变电所10kV母线短路电流，需采取相应措施。以下哪种措施不能有效限制10kV母线短路电流？为什么？（）
A.提高主变阻抗
B.10kV母线分列运行
C.在主变低压侧加装串联电抗器
D.110kV母线分列运行，10kV母线并列运行
参考答案：D
| 根据短文大意，从各题所给的选项中选择可以填入空白处的最佳选项。将其代号填入题前括号内。 | |||
| Life is not easy,so I’d like to say,"When anything happens, believe in yourself." When I was a young boy, I was too 1 to talk to anyone. My classmates often laughed at me. I was sad but could do 2 . Later, something happened, and it changed my life. It was an English speech(比赛) competition. My mother asked me to take part in it. What a terrible idea! It meant I had to speak 3 all the teachers and students of my school! "Come on, boy. Believe in yourself. You are sure to 4 ." Then mother and I talked about many different topics(话题). At last I 5 the topic "Believe in yourself".I tried my best to remember all the speech and practiced it over 100 6 . With my mother’s great love, I did 7 in the contest. I could hardly believe my 8 when the news came that I had won the first place. I heard the cheers from the teachers and students. Those classmates who once looked down on me, now all said "Congratulations!"to me. My mother hugged (拥抱) me and cried 9 . Since then, everything has 10 for me. When I do anything, I try to tell myself to be sure and I will find myself. This is true not only for a person but also for a country. | |||
| ( )1. A. shy ( )2. A. something ( )3. A. after ( )4. A. win ( )5. A. reached ( )6. A. times ( )7. A. quietly ( )8. A. hands ( )9. A. sadly ( )10. A. changed | B. sad B. nothing B. with B. lose B. brought B. words B. well B. arms B. warmly B. asked | C. excited C. anything C. before C. beat C. chose C. sentences C. slowly C. ears C. badly C. gone | D. happy D. everything D. among D. pass D. thought D. topics D. fast D. eyes D. excitedly D. come |