某火力发电厂有6台额定压力为13.72MPa,额定蒸发量为670t/h的电站锅炉。为

题型:问答题

问题:

某火力发电厂有6台额定压力为13.72MPa,额定蒸发量为670t/h的电站锅炉。为保证锅炉启动和稳定燃烧,建有2个500m3的轻柴油储罐。为发电机冷却,建有制氢站。制氢站装有1套制氢设备和4个氢罐,氢罐的工作压力为3.2MPa,体积13.9m3
锅炉燃用煤粉由磨煤机加工后,经输粉管道直接进入炉膛。因为生产需要,该厂决定对磨煤输粉系统进行改造。改造工程包括:拆除部分距离地面6m高的破损输粉管道,更换新管道。
在施工中,部分拆除和安装工作在脚手架上进行,使用额定起重量为5t的电动葫芦。拆除旧管道时,使用乙炔进行气割。新管道焊接前,使用角磨机进行抛光。拆除的旧管道和其他旧设备使用叉车运走。施工现场周围有正在使用的动力电缆和高温管道,还有部分未消除的煤粉。
根据以上场景,回答下列问题:

根据《企业职工伤亡事故分类标准》的规定,说明该施工现场可能发生的事故类型及其引发的因素。

考点:安全工程师安全生产事故案例分析安全生产事故案例分析
题型:问答题

外阴奇痒伴白带呈豆渣样为下列哪种疾病的典型表现()。

A.滴虫性 * * 炎

B.外阴 * * 假丝酵母菌病

C.老年性 * * 炎

D.淋菌性 * * 炎

E.结核性 * * 炎

题型:问答题

用盐酸萘乙二胺法测定空气中NOx时,对测定可产生干扰的物质是()

A.H2S

B.SO2

C.O3

D.HCHO

E.CO

题型:问答题

Islamabad, Pakistan, June 22nd---Two mountain climbers surprisingly survived (幸免于) a fall of over 500 feet on the 25,530-foot mountain in Pakistan, Saturday. The two climbers were climbing an ice-covered wall of the mountain when they suddenly lost their footing and fell about 560 feet to a narrow snow-covered ledge(悬崖突出部分) below. “We were lucky that ledge was there,” said the climbers, “Otherwise, we would have fallen over 2,000 feet.” If the ledge had not been there, the two climbers almost certainly have met their death. “It’s a wonder,” the climbers said, “that we landed on the ledge, and the snow was loose enough to cushion(缓冲) our fall. We’re thankful that we survived.”

When a reporter asked them if they planned to give up mountain climbing after their narrow escape(九死一生), the two climbers replied, “Not at all. We’ll be going back up there just as soon as we get out of the hospital.”

小题1: The mountain climbers survived because _____.

A.they had fallen only 500 feet down

B.of the ledge and the loose snow on it

C.of their strong bodies

D.they were very good climbers小题2: If there had not been the snow-covered ledge, _____.

A.they wouldn’t have fallen down

B.they would have them wounded

C.they would have lost their lives

D.they would fall into the deep snow小题3: How high was the ledge from the foot of the mountain?

A.2,560 feet high

B.2,000 feet high

C.25,530 feet high

D.More than 1,400 feet high小题4: Choose the right order which shows what happened to the two climbers.

a. talked with a reporter           b. lost their footing 

c. was sent to a hospital           d. fell to a ledge     

e. started to climb an ice-covered wall

A.b-d-c-e-a

B.e-d-b-c-a

C.e-b-d-c-a

D.a-c-b-d-e

题型:问答题

主归心、肝经的药物是

A.开窍药

B.活血药

C.安神药

D.补血药

题型:问答题

以下关于L2TPVPN配置注意事项的说法中正确的有:()

A、L2TP的LNS端必须配置虚拟接口模板(Virtual-TemplatE.的IP地址,该虚拟接口模板需要加入域

B、防火墙缺省需要进行隧道的认证。如果不配置认证,需要undo tunnel authentication命令

C、为了使L2TP拨号上来的用户分配的地址不能喝内网用户的地址在同一个网段

D、LNS端不允许配置多个L2TP-Group

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