“产品基本原理不变,因部分采加价值的活动都重大突破”,这是指哪一类()?
A.改进型产品
B.换代型产品
C.创新型产品
D.成长型产品
时间:2023-06-16 15:50:51
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The modern sailing ship was developed by a man who never went to sea. He was Prince Henry of Portugal, the younger son of the Portuguese king and in English princess.
Prince Henry lived in the fifteenth century. As a boy he became devoted to the sea, and he dedicated (devoted) himself" to improving the design of Ships and the methods or sailing them. In 1416, when he was twenty-two. Henry founded a school for mariners, to which he invited everyone who could help him —— Jewish astronomers, Italian and Spanish sailors, and Arab mathematicians and map makers who knew how to use the crude compass of the day and could improve it.
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To Prince Henry the world owes credit far development of craft that made oceanic exploration possible. He lives in history as Henry the Navigator.
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A、making oceanic exploration possible
B、improving the compass
C、founding a school for mariners
D、inventing the clipper ship
2.Prince Henry''s goal was to design vessels that could ______.
A、make long deep-sea voyages
B、travel faster than those in use at that time
C、explore the coastline of. Portugal
D、carry larger crews and more cargo than existing ones
3.Prince Henry started his school for the purpose of ______.
A、helping mariners
B、improving ship design and sailing methods
C、studying astronomy and mathematics
D、improving his own skill as a sailor
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