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【多选题】
某日16时10分,某厂维修班开始进行连接污油池的污油管线作业。16时20分,钳工甲将带有底阀的污油管线放入污油,当时污油的油水液面高度为500cm,上面浮有30cm厚的污油。在连接距离液面100cm高的法兰时,由于法兰无法对正而连接不上,班长乙决定采取焊接方式。17时10分电焊工丙带着电焊机到达现场,由于是油气场所作业,电焊工丙在现场准备好后,去车间办理动火票。17时20分,钳工甲见电焊工丙迟迟没有回来,又快到下班时间,于是用电焊开始焊接。焊接进行3分钟左右,发生油气爆炸,爆炸将污油池水泥盖板掀翻,污油池着火,钳工甲掉入污油死亡。钳工甲所处作业环境中,存在的主要危险有()。
A.
电磁辐射
B.
触电
C.
油气着火
D.
油气爆炸
E.
机械伤害
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【简答题】Directions: Read the following passage. After reading it, you should complete the information by filling in the blanks marked 48 to 52 (in no more than 3 words) in the table below. You should write yo...
【简答题】In this modern world, we rush around all day. There is no 48 for stillness. And when we are 49 to be still because we’re in line for something, or waiting at a doctor’s appointment, or on a bus or tra...
【多选题】下列不属于生长素类的植物激素是( )。
A.
KT
B.
IAA
C.
NAA
D.
BA
【单选题】A 52-year-old woman has experienced worsening malaise during the past year. On physical examination, she has mild scleral icterus. There is no ascites or splenomegaly. Serologic test results are posit...
A.
Concentric “onion-skin” bile duct fibrosis
B.
Copper deposition within hepatocytes
C.
Granulomatous bile duct destruction
D.
Hepatic venous thrombosis
E.
Interface hepatitis
F.
Massive hepatocellular necrosis
G.
Microvesicular steatosis
【简答题】I am a middle school student. My name is WeiFang. I’m thir now. I study at No.52 Middle School. I am in Class 3, Grade 1. There are twenty boys and twenty-three girls in my class. We have four les...
【单选题】以下关于多媒体计算机的说法中,不正确的是()
A.
多媒体计算机是指符合或超过MPC标准的计算机
B.
多媒体计算机是指能够综合处理多种媒体信息,并在它们之间建立逻辑关系,使之集成为一个交互式系统的计算机
C.
多媒体计算机是指能够设置多种文本格式的计算机
D.
多媒体计算机系统由硬件系统和软件系统两部分构成
【单选题】以下关于多媒体处理的说法中不正确的是( )。
A.
对于同一幅图像,如果分辨率相同而颜色不同,那么数字化存储时颜色数越多数据量越大。
B.
利用软件可以将CD光盘上的音轨转换成MP3音频文件,MP3格式是无损压缩。
C.
JPG图像压缩格式通常是有损压缩,图像放大会失真。
D.
要对旧照片进行翻新,可以用扫描仪将图片扫描进计算机,然后用图像处理软件进行加工。
【单选题】Perth operates a process costing system. The process is expected to lose 25% of input and this can be sold for $8 per kg. Inputs for the month were: Direct materials 3,500 kg at a total cost of $52,50...
A.
$44,100
B.
$49,700
C.
$58,800
D.
$56,525
【单选题】A 52-year-old woman with no major medical problems takes a long airplane flight across the Pacific Ocean. Upon arrival at Sydney's Kingsford Smith airport following the flight from Los Angeles, she ca...
A.
Activation of Hageman factor has led to bradykinin production.
B.
A lot of drinks were served in the first class section.
C.
Femoral vein thrombosis developed.
D.
A cellulitis developed in her legs.
E.
Venous hydrostatic pressure became increased.
【单选题】以下关于多媒体处理的说法中不正确的是()。
A.
对于同一幅图像,如果分辨率相同而颜色不同,那么数字化存储时颜色数越多数据量越大
B.
利用软件可以将CD光盘上的音轨转换成MP3音频文件,MP3格式是无损压缩。
C.
JPG图像压缩格式通常是有损压缩,图像放大会失真。
D.
要对旧照片进行翻新,可以用扫描仪将图片扫描进电脑,然后用图像处理软件进行加工。
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