[单选题]井下配电网路必须具有()。
A.短路、过负荷、漏电保护装置
B.过流、短路保护装置
C.短路、过负荷、接地和欠压释放保护

{{B}} Some Notes on Gender-Neutral Language
General{{/B}}
The practice of assigning masculine gender to neutral terms comes from the fact that every language reflects the prejudices of the society in which it evolved, and English evolved through most of its history in a male-centered, patriarchal society. Like any other language, however, English is always changing. One only has to read aloud sentences from the 19th century hooks assigned for this class to sense the shifts that have occurred in the last 150 years. When readers pick up something to read, they expect different conventions depending on the time in which the material was written. As writers in 1995, we need to be not only aware of the conventions that our readers may expect, but also conscious of the responses our words may elicit. In addition, we need to know how the shifting nature of language can make certain words awkward or misleading.