Safe Zone “One Question per Day” 2010-11-22
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The height of the protective railing for work at heights in the production areas of industrial enterprises should be ＿mm, with horizontal bars spaced ____mm apart; a guard plate with a height of not less than ____mm should be installed at the bottom of the railing. A. 1000, 300, 50 B. 1000, 350, 70 C. 1050, 300, 50 D. 1050, 350, 70 Note: Please hide the reply; method to hide it: http://bbs.hcbbs.com/thread-492556-1-1.html Do not edit after replying. Answer D
The height of the protective railing for work at heights in the production areas of industrial enterprises should be ＿mm, with horizontal bars spaced ____mm apart; a guard plate with a height of not less than ____mm should be installed at the bottom of the railing. Choose D. 1050, 350, 70
D. 1050, 350, 70
D 1050,350,70
The height of the protective railing for work at heights in the production areas of industrial enterprises should be 1050 mm, with horizontal bars spaced __350__ mm apart. At the bottom of the railing, there should be a guard panel with a height of not less than 70 mm.