"A lot of stately homes will have that system," says Niki Johnson, fire systems technical adviser for the UK Fire Association, a trade body, and owner of fire detection firm Derventio Fire and Security. "You could be looking at £3-4,000 just to do a corridor." Such installations require substantial pipework, he explains.
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员工安全意识培训同样不可忽视，人为因素往往是最薄弱的环节。
For almost a century, until the 1960s, soda bottles in the US were generally meant to be returned.
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