问题
单项选择题
在（）及以上中性点直接接地系统中，变压器停、送电及经变压器向母线充电时，必须将中性点接地开关先合上，随后进行其它操作。
A.10kv
B.220kv
C.35kv
D.110kv
答案
参考答案：D
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在（）及以上中性点直接接地系统中，变压器停、送电及经变压器向母线充电时，必须将中性点接地开关先合上，随后进行其它操作。
A.10kv
B.220kv
C.35kv
D.110kv
参考答案：D
| 完形填空 | ||||
| Mr. Glen is a millionaire. Five years ago, after returning from abroad to his motherland, he 1 his small company. Speaking of success, Glen often tells us a story about his extra expensive "school" fee. He always 2 his success to it. At that time, Glen, who already got a Ph.D. degree, 3 to return to the homeland, starting a company. Before leaving, he bought a Rolex watch with the 4 made through years of work after school and the scholarships. At the airport he had to accept the 5 customs check. The watch on his wrist was also demanded to be taken down for 6 . Glen knew that carrying the specific goods out had to pay the tax, and he worried about paying 7 for his watch. So when he was checked, he told a lie that his watch was a 8 fake(假货). When he was 9 of his "smarts", immediately, in the presence of Glen, the officers hit the watch, 10 cost nearly ＄100,00, into pieces 11 hearing Glen's words. Glen was 12 . Before he understood why, he was taken to the office to be examined 13 . For many times of entry-exit 14 he knew that only  those people in the "blacklist" would "enjoy" this special treatment. The officers looked over everything carefully in the box, and 15 him no matter what time of entry and exit he must accept the check and if 16 reusing and carrying fake goods, he would be 17 according to law! Suddenly, his face turned red, and he had nothing in mind after boarding the plane for long.After returning to the homeland, he often told the story to his family and his employees. He said that this made a deep 18 on him, because the additional high "school" fee that he had ever paid made him realize the value of 19 , which he would remember as the 20 of his success forever. | ||||
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