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【单选题】
E
| Tales From Animal Hospital David Grant David Grant has become a familiar face to millions of fans of Animal Hospital. Here Dr. Grant tells us the very best of his personal stories about the animals he has treated, including familiar patients such as the dogs Snowy and Duchess, the delightful cat Marigold Serendipity Diamond. He also takes the reader behind the scenes at Harmsworth Memorial Animal Hospital as he describes his day, from ordinary medical cheek-ups to surgery (外科手术). Tales From Animal Hospital will delight all fans of the programme and anyone who has a lively interest in their pet, whether it be cat, dog or snake! ￡ 14.99 Hardback 272pp ISBN 0751304417 Newton: The Last Sorcerer Michael White From the author of Stephen Hawking: A Life in Science, comes this colourful description of the life of the world’s first modem scientist. Interesting yet based on fact. Michael White’s learned yet readable new book offers a tree picture of Newton completely different from what people commonly know about him. Newton is shown as a gifted scientist with very human weaknesses who stood at the point in history where magic (魔术) ended and science began. ￡ 18.99 Hardback 320pp Fourth Estate ISBN 1857024168 Fermat’s Last Theorem Simon Sigh In 1963 a schoolboy called Andrew Wiles reading in his school library came across the world’s greatest mathematical problem: Fermat’s Last Theorem (定理). First put forward by the French mathematician Pierre de Fermat in the seenth century, the theorem had baffled and beaten the finest mathematical minds, including a French woman scientist who made a major advance in working out the problem, and who had to dress like a man in order to be able to study at the Ecole Polytechnique. Through unbelievable determination Andrew Wiles finally worked out the problem in 1995. An unusual story of human effort over three centuries, Fermat’s Last Theorem will delight specialists and general readers alike. ￡ 12.99 Hardback 384pp Fourth Estate ISBN 1857025210 |
A.
To encourage people to raise questions.
B.
To cause difficulty in understanding.
C.
To provide a person with an explanation.
D.
To limit people’s imagination.
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【多选题】若要满足切应力互等定理，则两个相互垂直平面上垂直于平面交线的切应力应（）。
A.
大小相等
B.
大小不等
C.
方向同时指向（或背离）两个相互垂直平面的交线
D.
方向任意