A、<span style="font-size:14px;font-family:宋体">次绕组匝数多，电阻很大</span>
B、<span style="font-size:14px;font-family:宋体">一次绕组的漏抗很大</span>
C、<span style="font-size:14px;font-family:宋体">变压器铁心铜耗很大 </span>
D、<span style="font-size:14px;font-family:宋体">变压器的励磁阻抗很大</span>