Kháng sinh được sử dụng trong trường hợp nào? Khi sử dụng kháng sinh cần chú ý những đặc điểm gì?

Kiểm tra lại tích (x2 – 4x – 3)(2x2 – 5x + 1) có bằng (2x4 - 13x3 + 15x2 + 11x – 3) hay không.

Tính.11/15+2-3/5; tính 3-3/4+3/2 giải giúp mình với

Các anh chị ơi , giúp em với ạ , em đang cần gấp ạ 😭😭😭

Tổng tất cả các số nguyên x thoả mãn -23<=....<=18 Cảm Ơn Ạ

Mn ơi giúp mik vs ạ mik đag cần gấp ạ tất cả các bài trừ bài 1,2 phần hình hc ạ mn giúp vs ạ

viết về các phong tục cưới hỏi của người việt nam bằng tiếng anh

1. In the past, local were chosen to make sophisticated embroidered costumes for the Vietnamese King, Queen and other Royal family members. A.skill workers B.skillfully works C.skillful artists D.skilled artisans 2. Craftvillages are becoming popular in Viet Nam. A.tourism attractions B.tourist attractions C. tour attractiveness D.physical attraction 3. Situated on the bank of the Duong River,the village was famous for the of making Dong Ho paintings. A. craft B. production C.manufacture D.activity 4. Vietnamese traditional is done with a simple hammer and chisel. A. sculptural pieces B. sculpture C.sculptured feature D.sculptor 5.Now, at the age of over 80, the artisan is leaving the craft to his descendants with a desire to this ancient craft. A. preserve B.reserve C.change D.consider 6.For that artisan, making the paintings is a career it supports the life of many generations of the family. A. so that B.because C.because of D.although 7.The Van Phuc producers silk have expanded their silk garment goods they can satisfy the varied demand for their silk. A. in order to B. Despite C. Because D. so that 8.Weaving mats in Dinh Yen, Dong Thap used to be sold in the "ghost" markets set up at night and operated up to early morning the government built a new market five years ago. A. when B. until C. after D. as soon as 9.The traditional craft has from generation to generation. A.passed down B. Passed C.been passed down D.been passed by 10. Craftsmen have to the domestic and international markets so that they needn't depend on the middlemen for their sales. A. find B. find about C. find out D. find out about 11.The four-ton statue of hero Tran Vu, in 1667, still stands in Quan Thanh Temple. A. cast B.casting C. to cast D. to be vast 12.In 1990, due to the change of the economic situation, Dong Ho paintings were difficult to sell and many quit their job. A. craftsmanship B.craft unions C. craftsmen D.crafts 13.Making rice paper jobs and income for many locals, help many families out of poverty and become well-off. A.keeps B. gets C. applies for D. creates

tại sao cần phải bảo vệ tài nguyên vùng biển nước ta

Người ta măn sơn bên phòng học hình hộp chữ nhật có cd 9m cr 6,5m cc 4m.phòng học có trần và diện tích các cửa .tinh diện tích cần lăn sơn