有功功率与视在功率之比称为()
A
暂无解析
Thedriverpulled_____atthetrafficlights.
Ifhe_____thestorekeeper‘sscissors，hewouldhaveforgottentobuyapair.
重写句子：Alanpassedthetest.Alanhadstudiedhard.Alanhadunderstoodthematerial.(complexsentence)
在医患沟通中患者隐瞒病情可能因为以下哪些原因
乳牙出齐的年龄是（）
