当变压器初级线圈和次级线圈有电流通过时,因线圈自身电阻引起的电能损失叫()。
参考答案:铜损
短文改错。
Many students are now facing with problems like deciding whether to focus on science or art. Not
taking the children's interest or preferences in account, some parents force their children to make the
choice as their will, that troubles many students.
Throughout our lives we have to make much choices. As students, we should talk to our parents
or teachers especial on life-changing decisions. But when it came down to it, we're the ones who must
live with their choices. On the other hand, parents should try to help their children make the best possible
decisions, instead forcing them to do something that against their will.
It depends on students themselves whether they'll be science students and arts students. Just let their
hearts show them the way.
什么是卤钨灯?