In May 1775, _______________ was held in Philadelphia and began to assume the functions of a national government.
从发射区注入基区的多子形成的电流与总的发射极电流之比,称为注入效率。
The Magna Carta was designed to protect the rights of both the privileged class and the townspeople.
发散思维强调的是多种答案,集中思维强调的是唯一答案