题目

This new-type machine____________  little room. A. takes up                           B. is taken up     C. has been taken up                  D. is taking up 答案：A 解析: 本题是动词语态的考查。take up表示“占据”，此处指新式机器的优点。一个学生在绕制电磁铁线圈时，用短导线绕了两个线圈，绕向如图，通电后使电磁铁的磁性最强并使靠近中间两端相互排斥，画出正确的连接方法．