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1.The invention of "arithmetic" and "arithmetic" had a great impact on the development of ancient mathematics in China. where " is a small stick for calculation, and the calculation made with it is called ".
a.Calculation Calculation.
b.Calculation Calculation.
Answer: A2The current "star", "enlightenment" and "Chang Gung" in the "Book of Songs" refer to everything
a.Venus. b.Jupiter.
Answer: A3In the 90s of the 19th century, Europe derived a famous starch fermentation method from China's koji to establish a famous starch fermentation method in the alcohol industry.
a.Fermented koji.
b.Mucor. Answer: B
4.Written in the period, the "Examination of the Work Record" generally correctly reflects the law of alloy proportioning, and is the world's earliest empirical scientific summary of alloy proportioning.
a.Spring and Autumn Warring States.
b.Han dynasty. Answer: a
5.During the Spring and Autumn Period and the Warring States Period, a large number of bronze wares with thin and delicate shapes and delicate and clear ornamentation emerged, which was the result of the improvement of casting technology and the improvement of the casting performance of metals. __
a.That's right. b.Mistake.
Answer: A6During the Spring and Autumn Period and the Warring States Period, the use of iron farming tools and the promotion of ox ploughing led to the reclamation of a large amount of wasteland and the increasing number of private fields, thus promoting the emergence of a small peasant class. __
a.That's right. b.Mistake.
Answer: a
7.During the Spring and Autumn Period and the Warring States Period, the manufacture of bronze weapons was very developed, and the cadres and generals, Mo Xie, Juque, Chunjun and other things that have been praised by people since ancient times were made in this period.
a.Bronze knife.
b.Bronze sword.
Answer: B8Ancient bronze is mainly an alloy of copper, tin, lead and other elements. Compared with pure copper, it has a higher melting point and hardness, so it has better casting properties and mechanical properties.
*: See Manuscripts on the History of Science and Technology in China (Revised Edition) (Peking University Press, 2012).
a.Height and Small.
b.Low and large.
Answer: B9The main body of the Shang Dynasty ruins in Zhengzhou, Henan Province and Huangpi Panlongcheng in Hubei Province is made of rammed earth, and this construction method can concentrate more labor force at the same time, and construct according to certain requirements and standards, which not only accelerates the progress of building the city, but also ensures the quality.
a.Edition. b.Stack.
Answer: a
Hotspot Engine Plan 10The modeling, ornamentation and processing technology of the bronze group of the tomb of Zeng Marquis Yi in Suizhou, Hubei Province have reached a new height in the Spring and Autumn Period and the Warring States Period. Among them, the chimes are ancient regardless of the shape, but the difference is that they are more skillful in the use of techniques such as sub-model co-casting and inlay patterns.
a.Hundy casting method.
b.Stack casting method.
Answer: aMust see Click on the avatar to enter the private message "2023" on the homepage, and you can see the previous topics