检查电路故障时,如果磁场外电路无故障,就将外磁场线拆下,并在磁场接柱上刮火,有火花,表示磁场内电路不通,若无火花表示磁场外电路不通。
参考答案:错
The teacher is an enthusiastic woman _____ Ms Shen and her method of teaching is nothing like ___ of the teachers at my Junior High School.
A.called; that
B.calling; that
C.is called; that
D.called; it
低碳模式的理论基础不包括()
A.人生哲理
B.生态伦理
C.生态经济
D.循环经济