问题
选择题
Those successful deaf dancers think that dancing is an activity ______ sight matters more than hearing. [ ]
A. when
B. whose
C. which
D. where
答案
D
搜题请搜索小程序“爱下问搜题”
Those successful deaf dancers think that dancing is an activity ______ sight matters more than hearing. [ ]
A. when
B. whose
C. which
D. where
D
为原线圈，
为副线圈，
为副线圈引出的一个接头。原线圈输入正弦式交变电压的
图象如图（2）所示。若只在
的电阻，或只在
间接一只
的电阻,两种情况下电阻消耗的功率均为
。
的表达式
