2___there are a large number of chemical factories,the air is likely to be pollutedA that B where C once D as 3【题文】 ___ there are a large number of chemical factories,the air is likely to be polluted. A.ThatB.WhereC.OnceD.As 4___ there are a large number of chemical...
Today, ultrasonic(超声的)waves are being put to work in laboratories and factories.If an ultrasound generator is placed in a liquid, the waves move the liquid back and forthhundreds of thousands of times each second.This causes materials to mix quickly or to dissolve(使分解,使溶解)in liquids...
2025 will be good for people with jobs. These individuals will remain busy with their duties. This year, they will feel happy and relaxed. They will have good times with their employees. The best thing is that people with jobs will enjoy a favorable environment in their workplace. As per ...