题干

阅读图文材料,完成下列要求。
    伏尔加河是欧洲最长河流,发源于东欧平原上的瓦尔代丘陵,注入里海,全长3688千米,落差256米,河水主要靠积雪融水补给。流域内资源丰富,人口密集,是俄罗斯工业、农业和内河航运最发达的地区之一。从20世纪30年代开始,俄罗斯在伏尔加河上修建了众多的水电站,年平均发电量达395亿千瓦小时(度)。同时,还修建了伏尔加—顿河、伏尔加—波罗的海等运河,使伏尔加河与波罗的海、黑海和白海(北冰洋)航运联为一体。表1和图乙分别为图甲中①、②两地气候资料和建电站前相对流量季节变化图。

上一题 下一题 0.0难度 选择题 更新时间:2019-09-06 08:01:26

答案(点此获取答案解析)

同类题2

阅读理解

CUSTOMER HEALTH:

A GUIDE TO INTELLIGENT DECISIONS

Eighth softcover edition of leading college text covering all aspects of basic health strategy (策略) for consumers. Includes much information on food fashion and “alternative methods”. Thoroughly referenced. By Stephen Barrett, M. D., William M. London, Ed. D., Robert S. Baratz, M. D., D. D. S., Ph. D., and Manfred Kroger, Ph. D. 608 pages, $23.00.

CHIROPRACTIC (手疗法):THE GREATEST

HOAX (骗局) OF THE CENTURY?

L. A. Chotkowski, M. D., FACP, describes discoveries made during his half-century of medical practice. Includes reports of cases; the author's observations at New York Chiropractic College, a chiropractic office, and a chiropractic lecture; and details of critical reports in the media. Second edition, softcover, 208 pages, $15.

THE WHOLE TOOTH

The fundamental guide to protecting your dental health and your pocketbook. Covers preventive care, finding a good dentist, dental restoring, cosmetic dentistry, dental quackery (治疗) and fraud (假牙), and dental insurance programs, including managed care. By Marvin J. Schissel, D. D. S., and John E. Dodes, D. D. S. softcover, 284 pages, $10.

QUACKERY AND YOU

The 32-page softcover brochure with special viewpoints by William Jarvis, Ph. D., suitable for waiting rooms. $1.

    To above prices, please add $3 for first book and $1 for each additional book for postage & handling. Foreign countries add $5 per book. Send orders to Quackwatch, P. O. Box 1747, Allen Avenue, NY 18105. The checks must be in US dollars. We cannot process credit card orders. Please use our order form from Amazon.com and include your email address.