高次谐波由于频率增大,电容器对高次谐波阻抗减小,因()而导致温度过高甚至损坏电容器。
A.过电流;
B.过电压;
C.阻抗增加;
D.阻抗减小
参考答案:A
—Excuse me, can you tell me where the nearest bank is, please?
—______ Oh yes! It’s past the post office, next to a big market.
A.Mm, let me think.
B.Oh, I beg your pardon?
C.You’re welcome.
D.What do you mean?
对下列疾病检查有意义的试验,原发性血小板减少性紫癜
A.纤维蛋白肽A测定B.骨髓细胞学检查C.简易凝血活酶生成试验D.血小板抗体PAIgG检测E.血小板黏附及聚集功能测定