熔丝在接触良好,散热良好时,通过额定电流就会熔断。()
参考答案:错
It’s easy to become ________to the children you work with.
A.attached
B.devoted
C.abandoned
D.applied
影响记录保存的物理因素有()
A.虫害及化学品
B.盗窃
C.领导的干涉
D.不按规定借用或查阅