Cho mạch điện R1 (R2//R3) trong đó R1=18 vôn ,R2=R3=40 vôn , UAB = 76 vôn 

a) tính điện trở tương đương của  đoạn mạch.

b) tính cường độ dòng điện qua mỗi điện trở

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.