关于交流电路中的电容元件,其中不正确说法是()。
A.电容是储能元件
B.电容元件可视作开路
C.通过电容元件中的电流不等于零
D.电容元件能储存电场能量
参考答案:B
He was so __________ a key university that he would work until late into the night.
A.curious about
B.anxious about
C.desperate for
D.concerned about
泌尿系结石()
A.活动后血尿
B.无痛性血尿
C.脓性血尿
D.乳糜尿
E.气尿伴血尿