【简答题】完形填空。 Look at the picture of 1 room. 2 are white and the windows are big. On the wall you can see 3 old photo of the family. Their mother is 4 . She is a teacher 5 English. She is 6 a white hat. Behin...
【单选题】On the wall______ two large portraits.
【单选题】拆卸蓄电池时,先拆卸()极;安装时,先安装蓄电池的()极。
【单选题】蓄电池拆卸时,正负极电缆接头拆卸顺序是: