【判断题】Attention shall be paid to the reference direction of current and voltage during superposition. If the divided current or voltage is the same as the reference direction of the current or voltage to be...
【简答题】2 Complete the sentences. ► A sweater is often made of w ool . wool 1 Jewellery is usually made of s____ or
g____. 2 Toys are usually made of w____ or p____. 3 Bathroom and kitchen p...