【多选题】触电事故分为电击和电伤,电击是电流直接作用于人体所造成的伤害;电伤是电流转换成热能、机械能等其他形式的能量作用于人体造成的伤害。人触电时,可能同时遭到电击和电伤。电击的主要特征有()。
【多选题】人触电时,可能同时遭受电击和电伤。电击是电流直接作用于人体所造成的伤害,电伤是电流转换成热能,机械能等其他形式的能量作用于人体造成的伤害。电伤的主要特征有()。
【简答题】We should help these children with their homework. These children______by us with their homework.
【单选题】The family went to the Great Wall last Sunday, but they found themselves________when they reached the hote l. [ ]
【单选题】在国际上,( )较量已成为综合国力竞争的重要内容。
【单选题】The children went into the cinema one _______ another.
【单选题】Their reply was too ______ for anyone to doubt them.
【简答题】The children went there to watch the iron tower ________. A) to erect B) be erected C) erecting D) being erected