【单选题】内质网是由波特(Porter)等人1945年在电镜下观察下列哪种细胞时发现的
【简答题】A.He was attracted by Mrs Jones. B.He had heard a noise. C.He had run out of gas. D.His tyros were punctured.
【单选题】指出句中状语:Every night he heard the noise upstairs.
【单选题】下列关于公司的民事行为能力表述正确的有 ( )
【简答题】热继电器与熔断器都是过电流保护,在电机控制中,热继电器能否取代熔断器,为什么?
【多选题】材料费用包括企业在生产经营过程中实际消耗的( )。
【单选题】Every night he heard the noise upstairs.