当起重机的位置和尺寸确定后，要复核<u>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</u>、<u>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</u>、<u>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</u>三项工作参数是否满足建筑物吊装要求，保证起重机工作幅度能将材料和构件直接运送到任何施工地点，尽可能不出现&ldquo;起重死角&rdquo;