《安全生产法》规定,生产经营单位委托工程技术人员提供安全生产管理服务的,保证安全生产的责任由（）
A. 本单位负责
B. 工程技术人员负责
C. 介绍工程技术人员的单位负责
查看答案
We can conclude from the passage that ________.
A. today's under-thirties are leading a miserable life in Britain
B. Laura Lenox-Conyngham's attitude to work and life represents that of many young professionals in Britain
C. Life can get harder for under-thirties in Britain
D. elders enjoy extremely high living standards in Britain
In what way does Laura Lenox-Conyngham make her living（）
A. By taking photographs for magazines.
By marring a rich man.
C. By subletting the lounge sofa-bed to her brother.
D. By preparing food for photographs for some magazines.
SF？开关气体报警压为（）Mpa
A. 5
B. 45
C. 3
要做到“安全第一”,就必须（）
A. 安全系数越高越好
B. 将高危作业统统关掉
C. 安全优先”的原则
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