高频电疗法是将频率高于()kHz的电流或其所形成的电场、磁场或电磁场应用于治疗疾病。
参考答案:100
—Amy, please tell the people seated and ________ for their turns to come to my office five minutes later.
—Yes, sir.
A.wait
B.waiting
C.waited
D.to wait
生活垃圾分类的目的是什么?