电磁式接触器的主要结构不包括

A．电磁机构

B．触点系统

C．灭弧装置

D．刀开关

—Mum, it is nice weather. I want to skate this afternoon.
—Don't you think the ice on the lake is too thin to （）your weight

A. stand

B. bear

C. catch

D. take