括号内单词的适当形式填空。 1. What____he_____(do) now
题型：填空题
问题：
括号内单词的适当形式填空。
1. What____he_____(do) now?
2. Tom likes______(run)in the morning.
3. One of the __________(watch) is mine.
4. Old Henry _____(sit) on a bench and watched his dog in the park.
5. Oh,what a ____(sun) day!
时（T为交流的周期），原线圈中的电流瞬时值为0.03A．变压器的原、副线圈的匝数比为（ ）
：3
