mot bep dien co ghi 220v-1000w dc su dung vs hieu dien the 220v de dun soi 2,5 lit nuoc o nhiet do ban dau la 20*C thi mat mot thoi gian la 18 phut 30 giay .biet nhiet dung rieng cua nuoc la 4200J/kg.K a)tinh nhiet luong nuoc thu vao b)tinh nhiet luong bep tao ra c)tinh hieu suat cua bep

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.