【C2】A．individualsB．groupsC．pairsD．persons

Happiness is a feeling which varies from person to person.（)

下列公式中，选出正确的本表它页取公式。A、B2=’C2’@1B、B2=’C2’@’1’C、B2=C2@1D、B2=C2@’1’

若两个电容C1＞C2串联，则总电容为（)。A.C1＋C2B.C1－C2C.C1×C2／（C1＋C2)D.（C1＋C2)／（C1×C2)

A．A responsible and independent person.B．A dynamic and diligent person.C．One with init

电容器C1、C2并联后，其总电容为（)。A、C1与C2之和B、C1与C2之差C、C1与C2之积D、C1与C2之比

School systems usually center on______A．professional capacities.B．personal personalities.C