问题
单项选择题
对2A及以上用电流速断保护灵敏性不符合要求的变压器应装设（）。
A.过流
B.零序
C.纵差
D.过负荷
答案
参考答案：C
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对2A及以上用电流速断保护灵敏性不符合要求的变压器应装设（）。
A.过流
B.零序
C.纵差
D.过负荷
参考答案：C
根据下表回答下列问题。
| 某地区各类别教育情况表 单位：千人 | ||||||
| 类别 | 2003 | 2004 | ||||
| 招生人数 | 在校人数 | 毕业生人数 | 招生人数 | 在校人数 | 毕业生人数 | |
| 研究生 | 2 | 5 | 1.6 | 3 | 6.4 | 2.2 |
| 普通高等 | 34 | 102 | 32 | 43 | 113 | 38 |
| 中等职业 | 46 | 124 | 47 | 54 | 131 | 48 |
| 普通高中 | 57 | 153 | 56 | 58 | 155 | 59 |
| 初中 | 132 | 401 | 130 | 136 | 406 | 142 |
| 普通小学 | 121 | 704 | 131 | 112 | 696 | 135 |
| 特殊教育 | 0.1 | 1.1 | 0.2 | 0.2 | 1.1 | 0.1 |
| 学前教育 | 98 | 185 | 102 | 201 | ||
某地区普通高等教育2004年毕业生人数比上年增加( )
A．15.79%
B．16.34%
C．17.82%
D．18.75%
| 完形填空 | ||||
| Sneaker is a kind of shoe worn by many people all over the world. Some say that the word "sneaker" is another word for tennis shoe, 1 no one really knows where the word came from. 2 say it came from the old English verb "sneak", which 3 to move silently and quickly. The only thing we are 4 is that when you put on a pair of sneakers, you 5 light-hearted, light-footed and ready to play. Sneakers of some kind are used by 6 who play tennis, basketball, and other sports. New design has been made 7 for people who run slowly. But perhaps sneakers are 8 used by children in the United States. In fact American children of 9 ages would much rather play in s  neakers than anything else, except perhaps 10 at all. New York City once held a poetry contest (诗歌比赛) for children. The subject was only "sneaker". Thousands of children sent in their 11 and praised the sneakers they love. One prize winner called 12 poem "The Sneaker and the World Peace". "When everyone is wearing sneakers," she said, "it will be impossible to 13 ." American school children can be seen every day 14 sneakers of all colours. They put them on in the morning and take them off 15 . Sneakers are 16 washed. In fact the older and dirtier they are, the 17 loveable they are. When their sneakers wear out (穿破), children hate to throw them off. How do you explain the closeness between 18 ? Perhaps another young 19 in the New York Poetry Contest said it best. "A shoe is just a shoe," he said. "But a sneaker is a 20 ." | ||||
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