题目内容
[背景资料] 某体育馆工程建筑面积56000m2，由主体育馆和附属用房组成，施工单位为某建设集团公司，工程开工后技术负责人组织编制了模板专项施工方案。 施工中发生如下事件： 事件一：安全员检查时发现，在模板安装面上方6m处有两条10kV高压线通过，便要求工长停止模板吊装施工，采取隔离防护措施；工长说，模板专项施工方案中没有相应的防护方案，不作处理便继续施工，之后刮起5级大风，导致大模板失控，撞到高压线，造成吊车司机死亡，供电中断1天。 事件二：安全员在进行定期检查时发现，在3m高的工作面上，模板安装工人使用的操作架子不稳固，没有搭设剪刀撑和安全防护措施，架子上无跳板，且随意堆放模板，人员在模板上通行。 事件三：工人在进行高支架模板安装时没有使用工具袋，随手放在操作架子上，有一扳手从架子上滑落，砸伤一名监理工程师。 事件四：工长得知后张预应力大梁混凝土强度达设计强度80%后(跨度7.5m)，便电话通知拆除模板，工长忘记将拆模令(只允许拆除梁侧模)交给架子班长和木工班长，也未对其交底。工人将梁侧模板和底模一起拆除，此时预应力钢筋尚未张拉，导致大粱下部跨中混凝土开裂，最大裂缝1mm。 [问题] 导致事件四事故发生的原因是什么后张法预应力混凝土正确的拆模顺序是什么
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In Cambodia, the choice of a spouse is a complex one for the young male. It may involve not only his parents and his friends, 1 those of the young woman, but also a matchmaker. A young man can 2 a likely spouse on his own and then ask his parents to 3 the marriage negotiations, or the young man"s parents may make the choice of a spouse, giving the child little to say in the selection. 4 , a girl may veto the spouse her parents have chosen. 5 a spouse has been selected, each family investigates the other to make sure its child is marrying 6 a good family.The traditional wedding is a long and colorful affair. Formerly it lasted three days, 7 by the 1980s it more commonly lasted a day and a half. Buddhist priests offer a short sermon and 8 prayers of blessing. Parts of the ceremony involve ritual hair cutting, 9 cotton threads soaked in holy water around the bride"s and groom"s wrists, and 10 a candle around a circle of happily married and respected couples to bless the 11 . Newlyweds traditionally move in with the wife"s parents and may 12 with them up to a year, 13 they can build a new house nearby.Divorce is legal and easy to 14 , but not common. Divorced persons are 15 with some disapproval. Each spouse retains 16 property he or she 17 into the marriage, and jointly-acquired property is 18 equally. Divorced persons may remarry, but a gender prejudice 19 up: The divorced male doesn"t have a waiting period before he can remarry 20 the woman must wait ten months.
In Cambodia, the choice of a spouse is a complex one for the young male. It may involve not only his parents and his friends, 1 those of the young woman, but also a matchmaker. A young man can 2 a likely spouse on his own and then ask his parents to 3 the marriage negotiations, or the young man"s parents may make the choice of a spouse, giving the child little to say in the selection. 4 , a girl may veto the spouse her parents have chosen. 5 a spouse has been selected, each family investigates the other to make sure its child is marrying 6 a good family.The traditional wedding is a long and colorful affair. Formerly it lasted three days, 7 by the 1980s it more commonly lasted a day and a half. Buddhist priests offer a short sermon and 8 prayers of blessing. Parts of the ceremony involve ritual hair cutting, 9 cotton threads soaked in holy water around the bride"s and groom"s wrists, and 10 a candle around a circle of happily married and respected couples to bless the 11 . Newlyweds traditionally move in with the wife"s parents and may 12 with them up to a year, 13 they can build a new house nearby.Divorce is legal and easy to 14 , but not common. Divorced persons are 15 with some disapproval. Each spouse retains 16 property he or she 17 into the marriage, and jointly-acquired property is 18 equally. Divorced persons may remarry, but a gender prejudice 19 up: The divorced male doesn"t have a waiting period before he can remarry 20 the woman must wait ten months.
In Cambodia, the choice of a spouse is a complex one for the young male. It may involve not only his parents and his friends, 1 those of the young woman, but also a matchmaker. A young man can 2 a likely spouse on his own and then ask his parents to 3 the marriage negotiations, or the young man"s parents may make the choice of a spouse, giving the child little to say in the selection. 4 , a girl may veto the spouse her parents have chosen. 5 a spouse has been selected, each family investigates the other to make sure its child is marrying 6 a good family.The traditional wedding is a long and colorful affair. Formerly it lasted three days, 7 by the 1980s it more commonly lasted a day and a half. Buddhist priests offer a short sermon and 8 prayers of blessing. Parts of the ceremony involve ritual hair cutting, 9 cotton threads soaked in holy water around the bride"s and groom"s wrists, and 10 a candle around a circle of happily married and respected couples to bless the 11 . Newlyweds traditionally move in with the wife"s parents and may 12 with them up to a year, 13 they can build a new house nearby.Divorce is legal and easy to 14 , but not common. Divorced persons are 15 with some disapproval. Each spouse retains 16 property he or she 17 into the marriage, and jointly-acquired property is 18 equally. Divorced persons may remarry, but a gender prejudice 19 up: The divorced male doesn"t have a waiting period before he can remarry 20 the woman must wait ten months.
In Cambodia, the choice of a spouse is a complex one for the young male. It may involve not only his parents and his friends, 1 those of the young woman, but also a matchmaker. A young man can 2 a likely spouse on his own and then ask his parents to 3 the marriage negotiations, or the young man"s parents may make the choice of a spouse, giving the child little to say in the selection. 4 , a girl may veto the spouse her parents have chosen. 5 a spouse has been selected, each family investigates the other to make sure its child is marrying 6 a good family.The traditional wedding is a long and colorful affair. Formerly it lasted three days, 7 by the 1980s it more commonly lasted a day and a half. Buddhist priests offer a short sermon and 8 prayers of blessing. Parts of the ceremony involve ritual hair cutting, 9 cotton threads soaked in holy water around the bride"s and groom"s wrists, and 10 a candle around a circle of happily married and respected couples to bless the 11 . Newlyweds traditionally move in with the wife"s parents and may 12 with them up to a year, 13 they can build a new house nearby.Divorce is legal and easy to 14 , but not common. Divorced persons are 15 with some disapproval. Each spouse retains 16 property he or she 17 into the marriage, and jointly-acquired property is 18 equally. Divorced persons may remarry, but a gender prejudice 19 up: The divorced male doesn"t have a waiting period before he can remarry 20 the woman must wait ten months.
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