多项选择题

对发电厂、变电站的接地装置的规定，下列哪几条是符合要求的？（）

A.水平接地网应利用直接埋入地中或水中的自然接地极，发电厂、变电所的接地网除应利用自然接地极外，还应敷设人工接地极
B.对于10kV变电站、配电所，当采用建筑物基础作接地极且接地电阻满足规定值时，还应另设人工接地
C.校验不接地系统中电气装置连接导体在单相接地故障时的热稳定，敷设在地下的接地导体长时间温度不应高于150℃
D.接地网均压带可采用等间距或不等间距布置

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Task 2Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45.Londoners are great readers. They buy a vast number of newspapers and magazines and even of books—especially paperbacks, which are still relatively cheap in spite of the ever-increasing rises in the cost of printing. They still continue to buy 'proper' books, too, printed on good paper and bound between hard covers.There are many streets in London containing shops which specialize in bookselling. Perhaps the best known of these is Charring Cross Road in the very heart of London. Here the bookshops of all sorts and sizes are to be found, from the famous one which boasts of being 'the biggest book-shop in the world' to the tiny, dusty little places which seem to have been left over from Dickens timE.Some of these shops stock, or will obtain, any kind of books, but many of them specialise in second-hand books, in art books, in books on philosophy, politics or any other of the many subjects about which books may be written. One shop in this area specializes in books about ballet(芭蕾舞)!Compared with 'paperbacks', as is suggested in this passage, 'proper' books are ______.A.more costlyB.more valuableC.more difficult to readD.more enjoyable to read

A.Londoners
B.
C.
A.more
D.more
E.more
F.more

多项选择题

750kV变电站中，主变三侧电压等级为750kV、330kV、66kV，下列表述正确的是：（）

A.750kV配电装置宜采用屋外敞开式中型布置配电装置
B.大气严重污染时，66kV配电装置可采用屋内式
C.抗震设防烈度8度时，750kV配电装置可采用气体绝缘金属封闭组合电器
D.抗震设防烈度8度时，66kV配电装置可采用敞开支持式管型母线配电

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