How to arrange the Chinese Dictionary of Xinhua dictionary

How to arrange the Chinese Dictionary of Xinhua dictionary

According to the scope from large to small: Book Reference Dictionary Chinese Dictionary Xinhua Dictionary;
From small to large: Xinhua Dictionary Chinese Dictionary reference book

Books that arrange the integrity of the sun and the moon are called () books; dictionaries and other books are called () books
Just one word

Books that arrange the integrity of the sun and the moon are called calendar books; dictionaries are called CI books

It costs 147.5 yuan to buy five dictionaries and three dictionaries in the school library. If one dictionary is used for two dictionaries, it costs 7.3 yuan. How much is each dictionary?

(147.5-7.3 × 3) / (5 + 6), = (147.5-21.9) / (11, = 125.6 ／ 11, = 111855 (yuan); the price of Dictionary: 111855 × 2 + 7.3, = 1256110 × 2 + 7310, = 2512110 + 803110, = 3315110, = 30322 (yuan); answer: the price of dictionary is 111855 yuan, the price of each dictionary is 30322 yuan

1 △ 1 / 10 + 1 / 11 + 1 / 12 + 1 / 13 + + 1 / 19) = a; find the integral part of A

There's a lot of talk upstairs~
b=1/10+1/11+1/12+...+1/191/20+1/20+1/20+...+1/20=1/2
1/2

When factoring polynomial - AB (a-b) 2 + a (B-A) 2-ac (a-b) 2, the extracted common factor should be______ ．

-AB (a-b) 2 + a (a-b) 2-ac (a-b) 2 = - A (a-b) 2 (B + 1-C), so the answer is: - A (a-b) 2

It is proved that alcohol contains both carbon and oxygen by experiment. Write the experimental steps, phenomena and conclusions

When sodium is put into alcohol, bubbles will be found, indicating that the alcohol contains - oh and O. after the alcohol is ignited, a dry and cold beaker is covered on the flame to collect the gas. After that, the gas in the beaker is immediately poured into the clarified lime water. It is found that the lime water becomes turbid, indicating that the alcohol contains carbon

(m-n)3-(2n-m)3

(m-n)3-(2n-m)3
＝﹙m－n－2n＋m﹚[﹙m－n﹚²＋﹙m－n﹚﹙2n－m﹚＋﹙2n－m﹚²]
＝﹙2m－3n﹚﹙m²－3mn＋3n²﹚

75 x 10% - 0. 625 (calculated by simple method)

15-3.75x10%-0.625
=15-0.375-0.625
=15-1
=14
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157×23156．

157 × 23156 = (156 + 1) × 23156 = 156 × 23156 + 23156 = 23 + 23156 = 2323156, so the answer is: 2323156

Simple calculation of 2004 × 20032003-2003 × 20042004
As soon as possible

It's easy. It's like this
=2004*(2003*10000+2003)-2003*(2004*10000+2004)
=2004*2003*10000+2003*2004-2003*2004*10000-2003*2004
=0