【单选题】下列哪种电容器不属于有机介质电容器()。
【单选题】下列型号的电容器属于瓷质电容器的是()。
【单选题】A company usually divides a market into small groups of consumers based on _______.
A.
the requirement of consumers
B.
how valuable the market is
C.
shared characteristics
D.
the need of the company
【简答题】不属于电的三要素的是: A电压 B电流 C电容 D电阻